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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: Tungsol 6550 - two dark plates or a black & a grey one ? posted by highfell on September 26, 2014 at 14:32:42:
This pair of tubes in your photographs are unusual. First of all, Tung-Sol, as far as I know, made the black plate version from 1955 to 1960 and then production of the solid grey plates commenced through 1963. Second, I've never seen Tung-Sol date codes like the ones you've submitted. Tung-Sol branded tubes always start with their manufacturer prefix 322, followed by the year and week of production. Even their mixed alphanumeric coded tubes start with 322.
They certainly appear genuine and the top-getter only tube would have to be a black plate. But again, I've only seen black plate top getter Tung-Sols with dates ranging from 1955 to 1958.
The picture above shows these tubes with dates of 31st week of 1955, 12th week of 1956, 21st week of 1957 and 12th week of 1958.
Anyway, the most important part is how do you think they sound?
Joe
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Follow Ups
- RE: Tungsol 6550 - two dark plates or a black & a grey one ? - Joe Appierto 18:33:54 09/26/14 (2)
- RE: Tungsol 6550 - two dark plates or a black & a grey one ? - highfell 13:44:13 09/27/14 (1)
- RE: Tungsol 6550 - two dark plates or a black & a grey one ? - Joe Appierto 14:32:20 09/27/14 (0)
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