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1PCS - SYLVANIA 6X4WA / 6X4 Vacuum Tube - NOS -No Original Box
1PCS - SYLVANIA 6X4WA / 6X4 Vacuum Tube - NOS -No Original Box

$13.02

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Sylvania 6X4 NOS Matched Black Plate, O Get Tubes! LAMM, Quicksilver Reduced $!!
Sylvania 6X4 NOS Matched Black Plate, O Get Tubes! LAMM, Quicksilver Reduced $!!

$69.99

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SYLVANIA 6X4WA TUBE SINGLE D GETR 1959 FULL WAVE RECTIFIER OLD SCHOOL
SYLVANIA 6X4WA TUBE SINGLE D GETR 1959 FULL WAVE RECTIFIER OLD SCHOOL

$19.88

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Early Vintage Pair of Sylvania 6x4 Black Plates - Amplitrex - 30 Day Returns
Early Vintage Pair of Sylvania 6x4 Black Plates - Amplitrex - 30 Day Returns

$74.50

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Sylvania 6X4 electronic vacuum tube untested
Sylvania 6X4 electronic vacuum tube untested

$3.00

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NOS NIB SYLVANIA 6X4 RECTIFIER HICKOCK 800 TESTED
NOS NIB SYLVANIA 6X4 RECTIFIER HICKOCK 800 TESTED

$19.99

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Lot Of 3 Sylvania 6X4 Electron Tubes
Lot Of 3 Sylvania 6X4 Electron Tubes

$19.95

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NOS NIB Pair of Sylvania 6X4WA Tested VACUUM TUBE Strong O-Getter Black Plate
NOS NIB Pair of Sylvania 6X4WA Tested VACUUM TUBE Strong O-Getter Black Plate

$24.45

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Vintage Sylvania 6X4 Black Plate Top D Getter Made In USA Tested Good
Vintage Sylvania 6X4 Black Plate Top D Getter Made In USA Tested Good

$14.99

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(1) Tested Sylvania 6X4 Tube Sylvania Full Rectifier Vacuum Tube
(1) Tested Sylvania 6X4 Tube Sylvania Full Rectifier Vacuum Tube

$10.00

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NOS 1969 SYLVANIA 6X4 WA JAN MILITARY VINTAGE TUBE - NEW OLD STOCK IN BOX
NOS 1969 SYLVANIA 6X4 WA JAN MILITARY VINTAGE TUBE - NEW OLD STOCK IN BOX

$12.95

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SYLVANIA 6X4 ELECTRONIC TUBE NEW OLD STOCK NIB NOS - T122
SYLVANIA 6X4 ELECTRONIC TUBE NEW OLD STOCK NIB NOS - T122

$19.99

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6X4 WA Sylvania New (New Old Stock) Test NEW 1 Year Warranty
6X4 WA Sylvania New (New Old Stock) Test NEW 1 Year Warranty

$10.45

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1951 Sylvania 6X4 NOS NIB 100% Black Plate Square Getter Serious Tubes D58
1951 Sylvania 6X4 NOS NIB 100% Black Plate Square Getter Serious Tubes D58

$14.00

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SYLVANIA 6X4 TUBE SINGLE D GETR 1959 FULL WAVE RECTIFIER OLD SCHOOL
SYLVANIA 6X4 TUBE SINGLE D GETR 1959 FULL WAVE RECTIFIER OLD SCHOOL

$19.88

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Lot of (25) Strong Tested 6X4 Tubes Full Rectifier Tubes Sylvania Raytheon More
Lot of (25) Strong Tested 6X4 Tubes Full Rectifier Tubes Sylvania Raytheon More

$249.99

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1 x 6X4 Sylvania Tube *Tested TV-7D/U*Very Strong Testing* (5 Available)NOS*NIB
1 x 6X4 Sylvania Tube *Tested TV-7D/U*Very Strong Testing* (5 Available)NOS*NIB

$17.99

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1956 Sylvania 6X4 Test NOS 100/100% Black Plates Top "D" Get Serious Tubes R13
1956 Sylvania 6X4 Test NOS 100/100% Black Plates Top "D" Get Serious Tubes R13

$9.00

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Sylvania 6X4 Vacuum Tube Type 831 - USA
Sylvania 6X4 Vacuum Tube Type 831 - USA

$11.95

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Sylvania 6X4 Test NOS 100/100% Black Plates Top "D" Getter Serious Tubes Q20
Sylvania 6X4 Test NOS 100/100% Black Plates Top "D" Getter Serious Tubes Q20

$9.00

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Pair Of 2 SYLVANIA 6x4 VACUUM TUBE
Pair Of 2 SYLVANIA 6x4 VACUUM TUBE

$14.99

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Pair of Sylvania JHS 6X4W Tested VACUUM TUBE Strong D-Getter Black Plate
Pair of Sylvania JHS 6X4W Tested VACUUM TUBE Strong D-Getter Black Plate

$18.95

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Lot of 2 Sylvania 6X4 EZ90 Tested VACUUM TUBE Strong D-Getter Black Plate
Lot of 2 Sylvania 6X4 EZ90 Tested VACUUM TUBE Strong D-Getter Black Plate

$18.95

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1 RCA sylvania 6X4WA tube NOS
1 RCA sylvania 6X4WA tube NOS

$17.99

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Tightly Matched Pair JHS 6X4W Sylvania NOS Vacuum Tubes, B&K 747B Tested 104+
Tightly Matched Pair JHS 6X4W Sylvania NOS Vacuum Tubes, B&K 747B Tested 104+

$32.95

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Vintage Sylvania 6X4 Vacuum Rectifier Tube @CPUCF
Vintage Sylvania 6X4 Vacuum Rectifier Tube @CPUCF

$14.99

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One Sylvania 6X4(EZ90) Rectifier Tube- Price is for ONE,New Old Stock/New In Box
One Sylvania 6X4(EZ90) Rectifier Tube- Price is for ONE,New Old Stock/New In Box

$13.95

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Lot of 2 Sylvania 6X4 EZ90 Tested VACUUM TUBE Strong Square-Getter Black Plate
Lot of 2 Sylvania 6X4 EZ90 Tested VACUUM TUBE Strong Square-Getter Black Plate

$17.95

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NIB GE 6X4 Rectifier Tube Tested STRONG 6X4
NIB GE 6X4 Rectifier Tube Tested STRONG 6X4

$18.99

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NIB Raytheon 6X4W Black Plate Rectifier Tube Tested STRONG 6X4 6202
NIB Raytheon 6X4W Black Plate Rectifier Tube Tested STRONG 6X4 6202

$19.99

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SYLVANIA 6X4 TUBE 1950'S BLACK PLATE D GTR LAMPE Valvola Lamp Röhre Valve
SYLVANIA 6X4 TUBE 1950'S BLACK PLATE D GTR LAMPE Valvola Lamp Röhre Valve

$19.99

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SYLVANIA 6X4 VACUUM TUBE SINGLE D GETR 1957 FULL WAVE RECTIFIER OLD SCHOOL
SYLVANIA 6X4 VACUUM TUBE SINGLE D GETR 1957 FULL WAVE RECTIFIER OLD SCHOOL

$19.88

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Lot Of 2 Sylvania 6X4WA Electron Tubes
Lot Of 2 Sylvania 6X4WA Electron Tubes

$19.95

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Sylvania 6X4 Vacuum Tube Black Plate
Sylvania 6X4 Vacuum Tube Black Plate

$5.99

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JHS 6X4W Sylvania NOS 1956 Vacuum Tube, black plate/square getter -will combine
JHS 6X4W Sylvania NOS 1956 Vacuum Tube, black plate/square getter -will combine

$12.95

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Sylvania - 6X4 - Vacuum Tube - NOS - Tests Good
Sylvania - 6X4 - Vacuum Tube - NOS - Tests Good

$15.00

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1 Sylvania JHS-6X4W4 Rectifier Tube D Getter NOS/NIB
1 Sylvania JHS-6X4W4 Rectifier Tube D Getter NOS/NIB

$11.87

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JAN 6X4 WA TUBE SYLVANIA NIB TESTED & BOXED VINTAGE GOVERNMENT SURPLUS
JAN 6X4 WA TUBE SYLVANIA NIB TESTED & BOXED VINTAGE GOVERNMENT SURPLUS

$13.75

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SYLVANIA 6X4 TUBE 1960s BLACK PLATE NOS NIB BRAND NEW IN ORIGINAL BOX RED LETTER
SYLVANIA 6X4 TUBE 1960s BLACK PLATE NOS NIB BRAND NEW IN ORIGINAL BOX RED LETTER

$19.99

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lot of 100 SYLVANIA TUBE BOX CARTON BOX FOR 12AX7 12AU7 12AT7 12BH7 12AY7 6X4
lot of 100 SYLVANIA TUBE BOX CARTON BOX FOR 12AX7 12AU7 12AT7 12BH7 12AY7 6X4

$58.88

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PAIR NIB SYLVANIA 6X4 TUBE BLACK PLATE HALO GTR MATCHED 56/60 TV-7A/U
PAIR NIB SYLVANIA 6X4 TUBE BLACK PLATE HALO GTR MATCHED 56/60 TV-7A/U

$25.00

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2 NOS Sylvania JHS 6X4WA Vacuum Tubes for Eico Grommes Scott Seeburg Rockola
2 NOS Sylvania JHS 6X4WA Vacuum Tubes for Eico Grommes Scott Seeburg Rockola

$20.00

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6X4 A Sylvania Vacuum Tube EZ90 CV493 VTG Preamp Amp Mixers Radios Tested Great.
6X4 A Sylvania Vacuum Tube EZ90 CV493 VTG Preamp Amp Mixers Radios Tested Great.

$10.19

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NOS Sylvania JHS 6X4W Vaccum Tube Full Wave Rectifier 1961 Black Plates
NOS Sylvania JHS 6X4W Vaccum Tube Full Wave Rectifier 1961 Black Plates

$21.99

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NOS NIB 1954 Sylvania 6X4W Black Plate Vacuum Tube Guaranteed
NOS NIB 1954 Sylvania 6X4W Black Plate Vacuum Tube Guaranteed

$25.00

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1950 Sylvania Philco 6X4 Test NOS 100/100% Black Plates Serious Tubes Q49
1950 Sylvania Philco 6X4 Test NOS 100/100% Black Plates Serious Tubes Q49

$9.00

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Sylvania JHS Military Grade 6X4WA NOS/NIB vacuum Tube Pair
Sylvania JHS Military Grade 6X4WA NOS/NIB vacuum Tube Pair

$27.00

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Code Pair 1959 Sylvania JHS 6X4WA NOS NIB 96/94% & 95/95% Serious Tubes O320
Code Pair 1959 Sylvania JHS 6X4WA NOS NIB 96/94% & 95/95% Serious Tubes O320

$24.00

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Code Pair 1959 Sylvania JHS 6X4WA NOS NIB 97/95% & 95/96% Serious Tubes O271
Code Pair 1959 Sylvania JHS 6X4WA NOS NIB 97/95% & 95/96% Serious Tubes O271

$27.00

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6X4 EZ90 WESTERN UNION VACUUM TUBE SYLVANIA MADE BLACKPLATE SQUARE GETTER
6X4 EZ90 WESTERN UNION VACUUM TUBE SYLVANIA MADE BLACKPLATE SQUARE GETTER

$14.99

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JHS 6X4 Sylvania most print missing Vacuum Tube, B&K 747B Test 104+ will combine
JHS 6X4 Sylvania most print missing Vacuum Tube, B&K 747B Test 104+ will combine

$7.95

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NOS Sylvania 6X4W Vacuum Tube
NOS Sylvania 6X4W Vacuum Tube

$15.99

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Lot of 45 RCA Philco GE Sylvania #35W4 & #6X4 Tube Radio Vacuum Tubes ~ T478A
Lot of 45 RCA Philco GE Sylvania #35W4 & #6X4 Tube Radio Vacuum Tubes ~ T478A

$74.95

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Sylvania NOS 6x4/EZ90 Rectifier tube - 1963 - Test NOS
Sylvania NOS 6x4/EZ90 Rectifier tube - 1963 - Test NOS

$13.04

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2 matched Sylvania 6X4 (EZ90) rectifier tubes-TV7D tests@ 54/52, 56/54 min:40/40
2 matched Sylvania 6X4 (EZ90) rectifier tubes-TV7D tests@ 54/52, 56/54 min:40/40

$28.50

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3 GE/SYLVANIA/RCA 6X4 AUDIO VACUUM TUBES, W/GRAY PLATE, D/ O GETTER,TV-7 TESTED.
3 GE/SYLVANIA/RCA 6X4 AUDIO VACUUM TUBES, W/GRAY PLATE, D/ O GETTER,TV-7 TESTED.

$21.55

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Sylvania 6X4WA Test NOS 100/100% Black Plates Halo Getter Serious Tubes P170
Sylvania 6X4WA Test NOS 100/100% Black Plates Halo Getter Serious Tubes P170

$12.00

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Sylvania 6X4WA Test NOS 100/100% Black Plates Square Getter Serious Tubes S44
Sylvania 6X4WA Test NOS 100/100% Black Plates Square Getter Serious Tubes S44

$12.00

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Sylvania JAN 6X4WA 6X4 Vintage Black Plate Rectifier Tubes (NOS sleeve of five)
Sylvania JAN 6X4WA 6X4 Vintage Black Plate Rectifier Tubes (NOS sleeve of five)

$80.00

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(1) SYLVANIA 6X4 USA, TOP O, BLACK PLATES. TESTED STRONG. EXCELLENT TUBE.
(1) SYLVANIA 6X4 USA, TOP O, BLACK PLATES. TESTED STRONG. EXCELLENT TUBE.

$14.95

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1PCS - SYLVANIA 6X4WA / 6X4 Vacuum Tube Tested - NOS
1PCS - SYLVANIA 6X4WA / 6X4 Vacuum Tube Tested - NOS

$15.40

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4 Sylvania 6X4 Tubes Halo Getter NOS/NIB
4 Sylvania 6X4 Tubes Halo Getter NOS/NIB

$37.95

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(1) SYLVANIA 6X4 USA, TOP O, BLACK PLATES. TESTED STRONG. EXCELLENT TUBE.
(1) SYLVANIA 6X4 USA, TOP O, BLACK PLATES. TESTED STRONG. EXCELLENT TUBE.

$14.95

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(1) SYLVANIA 6X4 USA, TOP O, BLACK PLATES. TESTED STRONG. EXCELLENT TUBE.
(1) SYLVANIA 6X4 USA, TOP O, BLACK PLATES. TESTED STRONG. EXCELLENT TUBE.

$14.95

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1954 Sylvania 6X4 Test NOS 100/100% Black Plates Square Get Serious Tubes S53
1954 Sylvania 6X4 Test NOS 100/100% Black Plates Square Get Serious Tubes S53

$9.00

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2 Matching Sylvania 6X4 EZ90 Black Plate Vacuum Tubes Tested NOS On TV 7
2 Matching Sylvania 6X4 EZ90 Black Plate Vacuum Tubes Tested NOS On TV 7

$29.95

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(1 PAIR) SYLVANIA 6X4 USA, TOP O, BLACK PLATES. TESTED STRONG. EXCELLENT TUBES.
(1 PAIR) SYLVANIA 6X4 USA, TOP O, BLACK PLATES. TESTED STRONG. EXCELLENT TUBES.

$39.95

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Pair Sylvania Silvertone 6X4 Test NOS 100/100% & 100/100% Serious Tubes S730
Pair Sylvania Silvertone 6X4 Test NOS 100/100% & 100/100% Serious Tubes S730

$18.00

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SYLVANIA 6X4 VACCUM TUBE NSMP
SYLVANIA 6X4 VACCUM TUBE NSMP

$15.00

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1 x NOS NIB 6X4WA Sylvania Mil Spec Rectifier - 2 Tubes Available TV-7 Tested
1 x NOS NIB 6X4WA Sylvania Mil Spec Rectifier - 2 Tubes Available TV-7 Tested

$10.00

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SYLVANIA JHS 6X4 WA TUBE 1953 BLACK PLATE LAMPE MIL SPEC SURPLUS
SYLVANIA JHS 6X4 WA TUBE 1953 BLACK PLATE LAMPE MIL SPEC SURPLUS

$24.99

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Lot of 2 Sylvania 6X4WA EZ90 Tested VACUUM TUBE Strong Square-Getter Black Plate
Lot of 2 Sylvania 6X4WA EZ90 Tested VACUUM TUBE Strong Square-Getter Black Plate

$19.95

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1 Sylvania JAN-6X4WA Rectifier Tube Halo Getter NOS/NIB
1 Sylvania JAN-6X4WA Rectifier Tube Halo Getter NOS/NIB

$11.87

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New Unused Sylvania JHS 6X4WA Ruggedized 6X4 / Old Vintage Ham Radio Tube Amp
New Unused Sylvania JHS 6X4WA Ruggedized 6X4 / Old Vintage Ham Radio Tube Amp

$5.00

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Vintage Sylvania 6X4 Electronic Tube Vacuum Tube w/Box
Vintage Sylvania 6X4 Electronic Tube Vacuum Tube w/Box

$9.99

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Sylvania NOS/NIB JHS-6x4W/EZ90 Rectifier tube - 1955 - Test NOS
Sylvania NOS/NIB JHS-6x4W/EZ90 Rectifier tube - 1955 - Test NOS

$17.54

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6X4 Sylvania Black Plates NOS NIB
6X4 Sylvania Black Plates NOS NIB

$15.00

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NOS NIB 1pc of Phillips ECG 6X4WA Tested VACUUM TUBE Strong O-Getter Black Plate
NOS NIB 1pc of Phillips ECG 6X4WA Tested VACUUM TUBE Strong O-Getter Black Plate

$9.95

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Sylvania 6X4 Vacuum Tube. USA. Tested Good.
Sylvania 6X4 Vacuum Tube. USA. Tested Good.

$9.99

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Sylvania JAN 6X4WA NOS
Sylvania JAN 6X4WA NOS

$17.00

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(1 PAIR) SYLVANIA 6X4 USA, TOP O, BLACK PLATES. TESTED STRONG. EXCELLENT TUBES.
(1 PAIR) SYLVANIA 6X4 USA, TOP O, BLACK PLATES. TESTED STRONG. EXCELLENT TUBES.

$39.95

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ONE NEW BLACK PLATE SYLVANIA 6X4W - USA made, will be tested on Hickok or B&K
ONE NEW BLACK PLATE SYLVANIA 6X4W - USA made, will be tested on Hickok or B&K

$10.95

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SYLVANIA 6X4 TUBE 1960'S BLACK PLATE O GTR LAMPE Valvola Lamp Röhre Valve
SYLVANIA 6X4 TUBE 1960'S BLACK PLATE O GTR LAMPE Valvola Lamp Röhre Valve

$13.98

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lot of 20 SYLVANIA TUBE BOX CARTON BOX FOR 12AX7 12AU7 12AT7 12BH7 6X4 6FQ7
lot of 20 SYLVANIA TUBE BOX CARTON BOX FOR 12AX7 12AU7 12AT7 12BH7 6X4 6FQ7

$13.98

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Kalamazoo Model 1 2 Amp Sylvania Tubes Set 6BQ5 6X4 12AX7A USED - Test NOS
Kalamazoo Model 1 2 Amp Sylvania Tubes Set 6BQ5 6X4 12AX7A USED - Test NOS

$78.03

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SYLVANIA 6X4 WA JHS TUBE SINGLE 1960s GOLD PINS FULL WAVE RECTIFIER
SYLVANIA 6X4 WA JHS TUBE SINGLE 1960s GOLD PINS FULL WAVE RECTIFIER

$24.88

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SYLVANIA 6X4 TUBE 1960'S BLACK PLATE O GTR LAMPE Valvola Lamp Röhre Valve
SYLVANIA 6X4 TUBE 1960'S BLACK PLATE O GTR LAMPE Valvola Lamp Röhre Valve

$13.98

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SYLVANIA 6X4 VACUUM TUBE NOS BOX GUITAR AMP HAM TV PART VTG
SYLVANIA 6X4 VACUUM TUBE NOS BOX GUITAR AMP HAM TV PART VTG

$15.20

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(9) NOS 6X4 Vacuum Tubes - RCA/Philco/Sylvania - USA 1950's 1960's - (TESTED!!)
(9) NOS 6X4 Vacuum Tubes - RCA/Philco/Sylvania - USA 1950's 1960's - (TESTED!!)

$67.42

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5 NOS SYLVANIA JHS 6X4WA VACUUM TUBES, GRAY PLATE, O GETTER,MATCHED, TV-7 TESTED
5 NOS SYLVANIA JHS 6X4WA VACUUM TUBES, GRAY PLATE, O GETTER,MATCHED, TV-7 TESTED

$70.66

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Sylvania 6X4 Rectifier ~ USED ~ TESTS STRONG
Sylvania 6X4 Rectifier ~ USED ~ TESTS STRONG

$7.95

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Code Pair 4-66 Sylvania JHS 6X4WA NOS NIB Military specs
Code Pair 4-66 Sylvania JHS 6X4WA NOS NIB Military specs

$45.00

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Sylvania NOS JHS-6x4W/EZ90 Rectifier tube - 1947 - Test NOS
Sylvania NOS JHS-6x4W/EZ90 Rectifier tube - 1947 - Test NOS

$15.74

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6X4 6U8 6AQ5A 6EJ7 6C4 12BA6 50B5 50HK6 50EH6 6CL6 Radio TV Tube Lot
6X4 6U8 6AQ5A 6EJ7 6C4 12BA6 50B5 50HK6 50EH6 6CL6 Radio TV Tube Lot

$5.00

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SYLVANIA JHS 6X4WA CV4005 EZ90 U78 NOS BLACK PL D-GETTER PERFECTLY MATCHED PAIR
SYLVANIA JHS 6X4WA CV4005 EZ90 U78 NOS BLACK PL D-GETTER PERFECTLY MATCHED PAIR

$49.00

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2 SYLVANIA JHS6X4WA VACUUM TUBES DATE 1965 TV7 TESTED
2 SYLVANIA JHS6X4WA VACUUM TUBES DATE 1965 TV7 TESTED

$6.29

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Code Pair 1 65 Sylvania JHS 6X4WA NOS NIB Military specs
Code Pair 1 65 Sylvania JHS 6X4WA NOS NIB Military specs

$45.00

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SYLVANIA Vacuum Tube Storage Wooden Box +6pcs free boxes for 12AT7 6DJ8 6X4
SYLVANIA Vacuum Tube Storage Wooden Box +6pcs free boxes for 12AT7 6DJ8 6X4

$19.18

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SYLVANIA JHS 6X4 WA TUBE 1965 BLACK PLATE LAMPE Valvola Lamp Röhre Valve
SYLVANIA JHS 6X4 WA TUBE 1965 BLACK PLATE LAMPE Valvola Lamp Röhre Valve

$24.99

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