Sylvania ONE (1) 12BH7A AT1000 TESTED Vacuum Tube black plate 12BH7 dual triode 1950-1959

This listing is for one (1) 12BH7A 12BH7 dual triode vacuum tube in the standard tube shape. It has a 9A miniature 9-pin base, curved black plate, and top square getter. Some of our stock is re-labeled or marked with the OEM of Silvertone, Crosley, Philco, Bendix. If you're looking for a particular brand, please message right as you order - we pack and ship quickly!

All but the very first Sylvanias have two "bites" taken out of one side of each curved black plate. The plates are otherwise very similar to CBS/Hytron/Raytheon/Tung-Sol black plates.

Your tube has been fully tested on a computer-regulated, USA-made Amplitrex AT1000 on Fixed Bias setting with used good results. It has also passed shorts and gas tests. The tube might have mechanical wear or have the label rubbed off - these are very old! Tubes that test like new (tNOS) are available in a separate listing. Every tNOS or Used Good tube you receive from Sound By Doc is guaranteed against failure for 60 days after purchase, an industry extreme!

OPTIONS (use offer feature in Reverb):

Want a regular white box? $1 extra per tube
Want the test results recorded on your box, too? $3 extra per tube