Bulova 1940 President "F"
This watch appears to be a President F, according to the 1940 ad that can be found by following the link below (the one with the radio tower that proclaims 'America greets the new Bulova "President".'); I am also adding below a small excerpt from the ad showing what looks like the subject watch.
The movement date code suggests a 1940 manufacturing date.
This watch is in decent shape and runs, but could use a new crystal. I will probably send it sometime soon to our member Timemachines (Mike Cousineau) for a service and possibly a crystal replacement.