Nothing on outside case back except "OPEN" Inside case back: Bulova Quality Pat. Jan. 11 1927 1127945 - Single hinge case w/ dust cover intact. Movement 21 Jewel 6 adjustments Bulova Watch Co. Dial stamped Swiss - Bracelet: Hallmarked "Sternite" - Case Deminsions: 26.7mm (not counting crown) by 36.4mm lug tip to tip. Crystal: 15.6mm by 21.4mm measured in case at bezel/crystal edge. First digit of case serial number used to determine production date.
Edited 2012.08.26
In reply to Unknown, and I'm thinking by Reverend Rob
'BERTRAM' http://www.mybulova.com/sites/default/files/uploaded_photos/user498/193… ad Dated Dec 1930.
In reply to Bertram has two-tone case, by bobbee
It shows the side engraving quite clearly, so if it had engraving on the top we should see it as it is not much thinner than that on the side on the watch.
The Oakley next to the Bertram has enamelling and the ad tells us, so one would think it would say so for the Bertram if it was enamelled.
In reply to It shows the side engraving by bobbee