Skylab
Reviewerus Prolificus
Just "6SN7" would almost never even be printed on the box - it would say 6SN7GT, or 6SN7GTB, etc. So likely the boxes were for other tubes. But vintage boxes are very cool
Originally Posted by shiaokun /img/forum/go_quote.gif 188-21 |
Originally Posted by shiaokun /img/forum/go_quote.gif 188-4 what factory is that? |
Originally Posted by shiaokun /img/forum/go_quote.gif would be be the 39th week of 79? the RCA logo and the box design certainly have that 70's feeling. |
Originally Posted by shiaokun /img/forum/go_quote.gif 6822. would that be the date code for the 22nd week of 1968? |
Originally Posted by shiaokun /img/forum/go_quote.gif 312 make them SYLVANIA. that true? |