2 piece Case measures 27.5mm lug to lug x 19mm non inclusive of the Crown using Calipers.
Unsigned Dial shows Black printed Arabic numerals.
Hour and Minute Hands are Fusaux style.
Movement bridge is Hand signed Bulova, plate is stamped Tissot.
Hinged Caseback is stamped as shown.
Date of manufacture is speculative.
http://www.mybulova.com/node/4960?page=1
enjoy.




Anyone else notice that the Roman numerals are 763, the same as the last three digits in the case serial #? I'm thinking that the Roman numerals on the case marry the case to the hinged case back. Just like in later cases where we see a similar system for 2 piece cases.
In reply to Anyone else notice that the by DarHin
Often seen on early watches and usually means that the movement in the holder goes with the case.
This one has mismatched roman numerals and case serial number.
In reply to Oh Darren, that is just so by bobbee