By any chance does it have a "Century of Progress" badge as seen at
https://www.collectorsweekly.com/sto...of-progress--1 ?
Here is another 1934 that has the 3-pin plug like the wiring that Leon posted.
https://www.youtube.com/watch?v=Toznd-XB50s
Janey - Neat people never make the exciting discoveries I do.
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