Made in the USA. NOS in original boxes.
Original boxes. Labeled and boxed as RCA and National.
Very rare! NOS in original boxes.
Lightly used, test as new. "Almost NOS". Nice sounding Mullard replicas made in Japan, Matsushita, in the 60s/70s.
Long plate 12AX7.
*** ALL BUT THE GRADE 2 (higher than average microphonics) specimens of these are sold out. Here's the same tube that arrived in bulk packaging, and with a different CV number. https://www.kcanostubes.com/node/808#overlay-context=content/nos-sylvani...
NOS in nice original boxes. 1950s/60s. Nice smooth tone, a little less bright than the average 12AX7.
NOS. One in stock labeled and boxed as True Tone. Original equipment in '60s Fender guitar amps. Classic tube for all Fender and similar amps. Some have alternate markings such as Amperex, GE, Motorola, Silvertone, etc.