Description:  1931 Unknown

Model Name


Case Date


Case Serial


Signature Locations

Inside case, movement, dial

Case Signature Format

"Bulova Quality"


10AN, 15 Jewels, 4 Adjustments

Movement Date Code


Movement Serial


Case Material Description

None indicated (two tone gold engraved)

Case Dimensions

34mm lug to lug x 26.5mm without crown

(26.5mm without lugs)

Case Type

Single hinged, square

Crystal Specifications

21.8mm x 20mm, rectangular

Other Details

1927 patent date inside case

Dust shield and ring intact

NOTES:  The advertisement shown below, from 1931, shows this model.  Unfortunately, the advertisement did not specify the model name.


UPDATE:  I now have a second example of this model that has an un-refinished dial.  It is dated 1931, both on the case and movement, and is shown below.