I have had these tubes for years. I think my dad had them when he repaired TVs many years ago. I think they are brand new. The 7025 s have 12AX7 hand written on the box. One tubes says made in USA but

 

Pair used vintage UTC ER-578 transformers. Mil number TF4SX13YY 15K ohms C.T primary, 600 ohm split secondary. +/- 2db 200-600 CPS (?) catalog may have spec here:http://www.junkbox.com/electronics/utc

 

PAIR 6V6GTY Vacuum Tube RAYTHEON Radio Ham audio Amp USA 6v6 GT D Getter Tested RYANMD79 Store

 

2 Type 7247 (12DW7) Vacuum Tubes RARE Audio Duo-Triodes These used tubes have been tested for mutual conductance. On my Hickok TV-7 tester the first triode sections read 41 and 51. A reading of 32 wou

 

Your bidding on a Working Sansui BA-3000 amplifier, its in very good condition some normal ware some scratches but no dents . It powers up, meters work, lights work . I am the third owner, also comes

 

This auction is for 1 set as pictured,of TECHNICS NAB HUB ADAPTERS. They are very nice and work like new. Please look at the pictures for the condition and email with any questions. I ship fast and pa

 

This is just the driver portion. I accidentally pulled the connector wires out of the main housing and had my local electronics repair shop fix these as best possible. He was able to reattach the wire

 

Vintage McIntosh C-28 Pre Amplifier in Excellent Working Condition...serviced recently, please refer to scan of invoice. This unit was from my wife's family's estate and has had one owner only, prior

 

1 Cunningham CX345 Tube,USA engraved globe manufacture---white boxed-TV7 tested-results below-test nil for shorts TV7 tested : 47 is minimum-test 84 TESTS STRONG Always willing to combine shipments Ce

 

NEW ECC83 whit 45* degree getter from Valvo , 12AX7 . NOS . new in box . I60 code . I have test the tube on my funke W19S tubetester and this tube is perfect . test result is 3,2ma - 3,2ma . the tube