Case measures 32mm lug to lug x 17mm wide non inclusive of the Crown.
Silver Dial shows Black printed Arabic numerals and Bulova signature, an intricately detailed center section is bordered with a Black printed track. Hour and Minute Hands are Black Modern style.
Hinged Caseback is stamped as shown.
Pontiac bracelet.
Two "blurry" Pater ads in 1925, and a clearer 1926 ad (below) click on graphic for full ad:
Noting the inside case signature is both American Standard and Bulova.
Crown looks to be replaced but other than that looks to be a winner. Ad looks like it has a jewel crown.
I'd say Pater, also. Very cool, Mark. That little engine is an FHF 332.
Mark I have a jeweled crown if you need one.
Forgot to put in my 2 cents worth. I vote Pater if the crown is replaced with one like the ad shows.
In 1925, same year as this watch, we have a June 1925 ad showing the same watch as the 6514. Betting it will turn out to be 6513 when we find and ad (fill version).
For now, I'm thinking in 1925 this watch could be ID'ed based on existing ads as either the 6514 and/or Patter.
I have this watch case #8354787 and I am interested in selling, would this interest anyone here...