Bulova 1938 Knight

Maybe, maybe not.
Where have you been, I've missed you.

According to the '43 GS crystal catalog the Knight takes a considerably smaller crystal than the Brunswick. Also, the MY314 is only listed for the Knight. This doesn't explain the missing sub-seconds hand in the Knight ad's though.

Oops, I thought Mark was the owner and fitted an MY314 to the subject watch but I just realized that Jerin added the watch. Jerin, can you post crystal measurements? Thanks

Looks like the subject watch and the other 1938 Kinght to which Mark fitted the crystal are very similar/same.   Mark also gives some measurement in that other 1938 Kinght (below).
Crystal Details: Federal MT9-245 145
Additional Information:  Curved and stepped Case measures 38mm Lug to Lug x 20mm wide non inclusve of the Crown while using Calipers. 

There's the pictures of the GS MY 314 crystal package for Kinght in this thread, which must apparently cross-reference to the Federal MT9-245 145 crystal installed in Marks's example .

The width of the Brunswick crystal (16.3mm) may be too wide to fit in Mark's example, leaving less than 2mm of horizontel bezel space on each side, and may be too wide for the subject watch. 

Plains was gonna try to add better pictures after subject watch arrived, and maybe we can get case measurements along w/ the requested crystal specs?