Hi All - I believe this is Practitioner, but the only advert I can find is a one for 1942 which has a different movement (10AX). the dial and case looks the same. But the movement is a 17 J 10AE which according to the movement info on the db is a 1940 movement. I haven't received the watch as yet and the picture of the movement is not clear enough to make out any date mark. But the case is marked Bulova with a shield after the name. plus serial number 8712886 under that its marked 10K gold filled
Case not a match. Bezel in ad has a 'ledge'.
Here is the other example, you can see the difference.
http://www.mybulova.com/watches/1940-practitioner-3315
What you have is the Buckingham, example below with the 1938 ad below that.
http://www.mybulova.com/watches/1939-buckingham-7121
Cheers, Bob.
after comparison of watches that we have in the database I am also inclined to Buckingham