I had a watch on this item back when a refrigeration guy offered to take a look at my '57 Combination after its compressor suffered an internal failure. Even with shipping it's still a good deal.
I remember seeing verbiage on a tag that advised on charge levels based on whether the refrigerator was older or newer than, I think, 1976, so the subject compressor isn't '50s vintage, but according to David, who shared the link to the auction with me, it would work on my '57.
The guy never followed up with me, so the '57 is still sitting here waiting.