Got a Variety of VERY OLD Vacuum tubes and looking for a website out there with some reference to "DATE CODES" for a VARIETY OF MANUFACTURES (BOTH US AND FOREIGN).
I'm particullary interested in this one manufacture " CROSLEY", which I have some 5U4G tubes and others and trying to figure out how old they are... see a 30 15 22 on the side and it would be nice to figure this one out and others...
Help!
Subspiderman
I'm particullary interested in this one manufacture " CROSLEY", which I have some 5U4G tubes and others and trying to figure out how old they are... see a 30 15 22 on the side and it would be nice to figure this one out and others...
Help!
Subspiderman
