Here is one I was initially convinced was a modified "fantasy watch" when I found it online for sale. My thought was the diamond settings looked too big for the dial, and the combination of yellow gold with a black dial seemed out of the ordinary as well. Apparently everyone else thought the same, as it was purchased for $1 over low opening bid.
Having never seen this one before and being a fan of diamond dials as well as 1958 dated and "what the heck is that?" watches, I took a shot.
Case date is 1958 (my birth year), 21 jewel movement is dated 1957. , I started out researching the case to figure out what it started life as and was quite amazed to actually find it depicted as purchased in 1958 Linebook BAWDO134.
1958 Beau Brummell "W" on the original band......
Some light crystal scratches / crazing and light to moderate plating wear on band. Running and keeping great time.