Wincharger dynamotor production Q.
 

Wincharger (Winco) was a major dynamotor manufacturer during WW2 - when did they cease manufacturing them? Apparently the Wincharger Sioux City plant was destroyed in a 1953 flood. I'm trying to date the Wincharger dynamotor on my early-50s? Collins 416W-1 power supply (part of Collins 618S-1A, same as DY-118/ARC-38).

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