Matched pair 12BH7A RCA DELCO NOS NIB early 1950’s TV7-B/U tested

Specifications

I have a very closely matched pair (2 tubes) of RCA (marked GM Delco) 12BH7A dual triode tubes. I've been sitting on these for about 10 years and decided to move them to somebody who can make use of them. Shuffling around in their original boxes has caused some of the RCA "red" labeling to have worn off. This is very typical of 75 year old tubes. Just to confirm their performance, I tested them again on my Dan Nelson calibrated TV7-B/U. Minimum acceptable value (the score at which the tube should likely be replaced but is still serviceable) is 29 for each half of the triode. One tube tested @ 29-94 & 29-96. The other tested @ 29-93 & 29-93. Simply stated, WOW! Both tubes have shiny black plates and "D" getters. $275 plus $14.99 shipping.

Related Items

Vintage Tested Strong Setchell Carlson 6GU7 Amp Amplifier Radio Audio Vac Tube

Hewlett Packard 12AU7 Fisher Scott Marantz preamplifier McIntosh amplifier tube

Full Part-out Heathkit AA-100 Tube Amp – Potentiometers

1 – NOS Ampex 499 Grand Master 10.5 1/2” Quantegy Reel Tape / Sealed

NEW PINCH ROLLER STUDER A80 & A800 GIZMO DESIGN ASSEMBLY REPLACEMENT 24TRK ATHAN

HP-19C/29C Solutions Manuals Set: 5 books Engineering, nav, games , math . 1977

Fender Passport 150 PRO PA Owner’s Manual and Quick Start Guide, 2009

Ampex 10″ Empty Metal Reel, 1/4″ Tape, 3 Window Silver one per bid 10 available