Geoff Baker
Posted February 9, 2016 - 9:48am
Ross, assuming you have the photographers permission to use these photos, I've added them to the record and deleted your links.
I think this is a possible "Practitioner" model. Here's an advert from 1943. Based on the photos, it is not military issue.

Full 1943 advert here:
http://www.mybulova.com/sites/default/files/vintage_ads/Bulova-ad-1943-…