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In Reply to: How do you clean 40+ year old tubes? posted by Bob Samuelson on September 4, 2003 at 15:44:03:
They're just too dirty to try to work around the printing not to mention that the ink smears fairly easily just by holding the tubes tightly to insert and pull them from the sockets so will someone please correct me if the following statement is incorrect..RCA cleartops have 12AU7A etched on the glass. They have "D" shaped side getters with grey plates. No one else ever manufactured a 12AU7A that can be mistaken for an RCA cleartop.
Thnaks,
Bob
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Follow Ups
- I think I've decided to wash them clean. - Bob Samuelson 09:24:29 09/06/03 (0)