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RE: Need Help Identifying Tube Marked 6DJ8/ECC-88

Posted by Audiodyssey (D) on July 6, 2008 at 15:36:40

In Reply to: RE: Need Help Identifying Tube Marked 6DJ8/ECC-88 posted by PhiloTFarnsworth on July 6, 2008 at 10:17:29:

They will be close to the bottom of the glass. If you see some figures there, may be a combination of symbols, numbers, & letters, try scratching them with a finger nail. They won't rub off. that's your date codes. Usually a top portion of three digits and bottom of 3 or 4 digits...for example
GA2
B2L1
If there is none there, well that leaves the door open, but a full date code can tell you everything about where the tube was made, when, and who made it.. These may be very faint, so look in sunlight or bright light at different angles. Let us know!

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