|SHELDON Electric did actually make some tubes in the early 1940's, maybe earlier and/or later as well. But mostly they just bought where ever they could get them. They did supply some transmitting tubes, but again, they were usually somebody elses. Their RETMA/EIA code was 636.|
Note the listing of Allied Electric Products on the box. This is NOT the Allied of Allied Radio and Allied Electronics fame. There may also have been a connection to a organization called SAL-MAR Labs, but I haven't been able to find much information on them.
Tube box courtesy of Larry Stephens
A Story For Our Time|
A Tale of Courage and Grit ~ With a Twist
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