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5691


1 NOS RCA JAN CRC 5691 Red Base Audio Tube USA 1950's

$80.00


1 NOS NIB RCA 5691 Red Base Audio Tube USA 1960

$80.00


NOS PAIR BEAUTIFUL BROWN BASE RCA 6SL7GT 6SL7 / 5691 BLACK PLATE VINTAGE TUBES

$105.00


Pair Vintage JAN CRC RCA Red Base 5691 6sl7 Vacuum Tubes Test Strong #12

$149.00


Pair of RCA 5691 NOS NIB Special Red 1963/65 Black Plt Vacuum Tubes - 8% matched

$200.00


Vintage PAIR Matching Dates 5691 RCA TUBES Red Base 1965 NOS in boxes untested

$119.99


Pair of RCA 5691 NOS NIB Special Red Gray Plate Vacuum Tubes

$150.00


Pair Nos Vintage GE Red Base 5691 6sl7 Vacuum Tubes #20

$179.00


(2) Vintage GE Red Base 5691 6sl7 Vacuum Tubes Strong!! Nice!! *NOS* NIB*

$137.00


Closely Matched Pair RCA JAN CRC 5691 NOS NIB Special Red 1955/56 Black Pl Tubes

$250.00


Pair Nos Vintage GE Red Base 5691 6sl7 Vacuum Tubes #8

$179.00


Matched Pair NOS NIB RCA 5691 6SL7 Vacuum TubesSame Date Codes

$189.00


1 GE 5691 / 6SL7 Vacuum Tube 10,000 Hours Red Base Tested New On Calibrated TV 7

$69.95


Vintage NOS 1956 RCA JRC-5691 6SL7 Red Base Black Plate DD Getter Amplifier Tube

$100.00


4 Nos & Nib Tall Bottle 6113 6SL7GT Vintage Tubes Hytron Tung-sol 5691 6SL7 NEW

$273.73


1950s RCA/Amperex Red Base BLACK PLATES 5691 (6SL7GT) tube - barely used

$75.00


6SL7 5691 RCA Military Red Base Strong Testing Vintage Vacuum Tube

$95.00


NOS NIB Sylvania 6SL7GT Black Plate Brown Base 5691 Audio Tubes USA

$79.99


RCA 5691 Red Base NOS Matched Quads 6SL7 Same Date

$998.26


5691 6SL7 VACUUM TUBES NOS NIB TESTED x 2

$198.00


TWO BRIMAR ECC35 6SL7GT 5691 England tubes TESTED NOS

$255.00


Matched pairs 6SL7 GT VT-229 5691 6N9P 6H9C TUBES IN BOX US TUNG-SOL Brown Base

$328.37


2pcs matched pair Shuguang WE6SL7 plus Vacuum Tube replace 6SL7 6N9P 6H9C 5691

$175.00


2 X SWEDISH EARLY MATCHED CODES STANDARD RADIO 33S29B 5691 6SL7 AUDIO TUBE

$899.99


"Very rare FIVRE 6SL7/ECC35/5691 Round plate...Quad match NIB

$250.00


rca 5692 tube nos nib 5691 cbs vt-231 ecc35 5693 televue eyepiece vt231 5r4gy s

$550.00


NOS RCA 5691 JAN red base tube matched pair

$269.00


Tung Sol Round Black Plate 6SLGT Guitar Audio Tube Tested (6SU7 5691)

$41.00


vt229 sylvania RCA tube 6sl7gt 5691 ecc35 tung-sol nos nib valve gt wgt WARTIME

$249.00


vt229 sylvania tube pair 6sl7gt 5691 ecc35 tung-sol nos nib valve rca gt wgt mil

$449.00


3 US PHILCO 6SL7 GT VT-229 5691 6N9P 6H9C TUBES IN ORIGINAL BOX NOS TESTED GOOD

$84.18


6SL7 GT VT-229 5691 TUBES IN ORIGINAL BOX NOS US NU Matched pairs Smoked Glass

$94.03


One Firve/Marconi 6SL7/5691 tested NOS

$180.00


3 US CBS 6SL7 GT VT-229 5691 6N9P 6H9C TUBES IN ORIGINAL BOX NOS Smoked Glass

$116.42


3 US RCA JAN 6SL7 GT VT-229 5691 6N9P 6H9C TUBES IN ORIGINAL BOX. NOS

$134.35


5691 tube rca 5692 6sl7 5692 5693 6su7 ecc35 6sn7 standard valve wgt tungsol nos

$699.00


6SL7 TUBE FIVRE QUAD 5691 RCA TUNG SOL 6SN7 5Y3 ECC35 6188 NOS CV569 CV1985 VT22

$1,500.00


vt229 sylvania tube pair 6sl7gt 5691 ecc35 tung-sol nos BLACK PLATE rca gt wgt

$750.00


6SL7 GT 5691 6N9P TUBES IN ORIGINAL BOX NOS US RCA A pairs Square Getter

$67.17


6sl7 tube pair nos Fivre 5691 rca gt wgt gz34 ecc35 valve vt-229 5u4g 6n9s 6188

$850.00