This watch is unknown to me, I put 'Alden' as my best guess, judging from the ads. I found a lookalike in number 27 ad. What is different, however, is the inner chapter index, which I can't recall having seen before. Under magnification, it appears that the sub second index has been darkened by hand. It bears both an engraved Omega type symbol, as well as the star or snowflake, which is struck. This gives two consecutive years of 1940-41.
The movement is a 10BE, which is an ETA 900, 15 jewel with Breguet overcoil. The case is very slightly curved, and crystal dimensions are 17x24.5, with a bulge to 18mm in the middle. The case is marked "Bulova Quality" on the edge of the outside, caseback, and bears no markings other than watchmaker's service marks (now including my own) within. It runs pretty good with a delta of about ten seconds in three positions.
What sayeth you, learned colleagues? Alden?