Help identifying a 1940s Rolex, please

[pwriterman]

I've just acquired this 1940s Rolex but can't seem to figure out exactly what it is. Here's what I know. INside caseback is stamped 4377 and below that, 4461. No serial numbers between lugs, or on movement, as far as I can tell.
dial has these numbeers: 10 1/2H 0508.
So...anyone know what this means? This is a manual movement and really cool. Just wonder what I have here...?

[adam78]

I'm not sure what information you want, but you have much already. First of all, this is an uncommon manual wind Oyster ref. which is a bit larger than usual for the early '40s, 34mm. It is in beautiful condition, with a dial design more commonly found in contemporaneous bubblebacks (although this watch is slightly larger). The markings on the dial you mention (where are they exactly?) seem to indicate the size of the movement (10.5 Hunter size). The SN at this time (I'm guessing WWII period by the dial) was usually found engraved on the outer case back (if not polished off), only between the lugs after 1946.

Nice find! I can recommend an excellent local watchmaker for you if you need one. I'm in Chicago as well.