On a scale of 1-10, this one is a 9+. I find one ad in the Db, referring to this as "A Real Man's Watch". There are 2 unknowns (1930 and 1931) associated with this ad, but neither is a match. This one is dead on. Note the "I II III II I" vertical lines on the horizontal ends and the unengraved triangular steps in case front crystal corners. Hinged case is only outside marked "open" on one end of the curved back.
This case is marked inside as "14K Gold Filled", however, the ad seems to list it as solid gold and it's the most expensive watch in the ad. See full ad here:
After closely inspecting the bottom edges of the lugs and inside of the spring bar holes, I can see wear and age buffed digs that should expose base metal, but there is none. The face of the case and sides are literally perfect. I believe this could be a mis-marked solid white gold case as the ad implies?
Watch keeps perfect time. Original dust cover with ring is in place. Crown is an obvious replacement and period band was added by me.