Bulova 1921 6713
Case measures 29mm lug to lug x 16mm non inclusive of the Crown using Calipers.
Sterling Silver Dial shows Black printed 'exploding' numerals, Bulova signature and track. Hour and Minute Hands are Black Modern style.
Cabochon Sapphire Crown.
Caseback is stamped as shown.
display ads dated: 1922 & 1923.