Over 40 years of collecting, I have seen just one legitimate Rolex marked watch with the model name Tudor on the dial. By the 1950s, the Tudor had become the little brother line, marketed beside Rolex as a lower priced line. If this just happened to be a legitimate Rolex dial marked Tudor as well, it would not be from the 1950s! The badly worn numbers on the case back aren't a lot of help. The model number (01090) doesn't appear in my reference material, and if the number 7809 1 is actually a serial number, that number would appear to be from circa 1936-37. That is, if it IS a Rolex serial number. IMO, that is NOT an Oyster crown on that watch. Still need to see what is inside the case.
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