I found a local seller of 6np3-se tubes, wrote a letter to him and asked whether he can find such tubes manufactured in the 70s. He said that they arrived in a common carton and then are packed (or will be packed) in individual boxes. One tube he removed from the box was made in 1987.
Then he said that in order to determine the year of manufacture, he should disrupt each box in which the tube is packed and see the production year written on a tube.
I don't understand it: each box should have standard flaps which can be opened (more or less easily), so removing a tube from the box should not pose any problem. He said in order to ensure that all tubes are of the same production period, he will have to disrupt (tear) the box, which is frustrating. I don't understand how those flaps can be torn? Or are they permanently fixed by a stapler?
I will appreciate any comments.
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Topic - 6np3-se tubes - Tubers 08:06:56 02/15/12 (19)
- Better LTP tube than 12AT7 ? - Stewen 10:10:04 03/09/12 (1)
- this question deserves its own thread (no text in msg) - adaug 14:37:07 03/09/12 (0)
- RE: 6np3-se tubes - FenderLover 09:01:09 02/15/12 (16)
- RE: 6np3-se tubes - Victor Khomenko 11:09:39 02/15/12 (15)
- RE: 6np3-se tubes - FenderLover 12:25:55 02/15/12 (14)
- RE: 6np3-se tubes - Tubers 00:44:19 02/16/12 (0)
- RE: 6np3-se tubes - Victor Khomenko 15:20:55 02/15/12 (5)
- Victor, thanks! - FenderLover 10:48:34 02/16/12 (4)
- RE: 6np3-se tubes - Tubers 12:37:00 02/15/12 (6)
- RE: 6np3-se tubes - Jim McShane 13:54:34 02/15/12 (4)
- RE: 6np3-se tubes - Tubers 21:37:40 02/15/12 (3)
- Maybe you could consider paying him to open up the lot - Frihed89 00:18:37 02/16/12 (2)
- RE: Maybe you could consider paying him to open up the lot - Tubers 11:41:58 02/16/12 (1)
- RE: Maybe you could consider paying him to open up the lot - Mr_bill2 12:41:39 02/16/12 (0)
- RE: 6np3-se tubes - FenderLover 13:00:42 02/15/12 (0)