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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: When were these manufactured posted by barhead on June 29, 2016 at 17:35:00:
The June 1951 acceptance date printed on the box indicates the tube was made no later than June 1951. That's true assuming your tube indeed is the tube that originally came in the box. From the photo you supplied your tube most likely is the original.The 3221-24 printed on the base of the tube provides the date detail you inquired about. Within that code, the 322 indicates Tung Sol manufactured the tube. The 1-24 indicates the tube was manufactured during the 24th week of 1951. The 1 in 1-24 in this case defines 1951 as the year of manufacture. And the 24 defines the specific week during 1951. The 24th week pegs the manufacture to early June of that year.
Nice looking tube!
Edits: 06/29/16
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Follow Ups
- RE: When were these manufactured - JazzDude 18:20:00 06/29/16 (1)
- RE: When were these manufactured - barhead 18:48:07 06/29/16 (0)
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