Movement Serial No.:
The BULOVA American Clipper. (1936 Saturday Evening Post display ad crops, for comparrison of the three 1936+ Clipper models...)
I'm not yet clear on what distinguishes the "Clipper," from the "Clipper B?" 15 or 19 Jewels?? And/or a 14 karat GF case vs. 10 k GF, perhaps??? And I have had several models with the "plain" bezel. (the basic "Clipper," perhaps?) The "Engraved" style, looks like the "Clipper B" Stephen posted, and also the black dial "C" model...
Unfortunately for me at the moment... Gary now has the "B," Marlin has the "C" and Philip will soon receive the plain bezel "Clipper? And I didn't denote the details about any of them, since they are being refurbed and resold!
The "B" model apparently sports the 17J 10AE movement, and was likely manfactured from 1935/6- 38?
The "C" model speaks for itself, with the distinctive black dial...
HOWEVER... THE FACT THAT THE ILLUSTRATOR HAD "PLAIN" BEZELED WATCHES FOR REFERENCE, LEADS ME TO SUSPECT THAT ALL CLIPPERS in 1936 (an immediate sales hit?!) were likely then soon also an option and in turn "upsold" with the fancier "ENGRAVED" cases by mid 1936 or 37, as well?? They dials were consistent, so that leaves cases and bands, and perhaps +2 jewels, later on???
Best :-) William