Hi All and thanks in advance.
I have a tube from a 1940's guitar amp. No markings on the glass at all. I'm used to seeing tube info printed on the glass itself (6V6, 12AX7, etc..), but nothing here. Written on it's base is, RCA Radiotron Made in the USA. It's a cokebottle style tube. Only other thing it printed is Y6E. Lower half is mirror coated.
Thanks!
I have a tube from a 1940's guitar amp. No markings on the glass at all. I'm used to seeing tube info printed on the glass itself (6V6, 12AX7, etc..), but nothing here. Written on it's base is, RCA Radiotron Made in the USA. It's a cokebottle style tube. Only other thing it printed is Y6E. Lower half is mirror coated.
Thanks!