I think this is pretty much All-Original, except for the GS Crystal.
Engraved bezel = Lone Eagle A, non engraved = Engineer, just my opinion, but worth discussing...more
http://www.mybulova.com/watches/1941-unknown-1201
http://www.mybulova.com/watches/1942-unknown-2320
In reply to Engraved bezel = Lone Eagle by OldTicker
LONE EAGLE in 1940 and '41
ENGINEER in 1942 which possibly has a Gold Caseback (?)
Case engraving would be variants of. eg: 'A', 'B' , 'C' ect, ect. as seen in other models of the era.
IMO
The Watch matches the descriptive text of the 1940 LONE EAGLE ad which clearly states "Stainless Steel back"
and 'ENGINEER' would have a different bezel opening as GS lists the 'LONE EAGLE' as the only model accepting the MT 346-23 Crystal.
In reply to Jeff, Do you remember the GS by OldTicker
In reply to The GS Crystal shown in the by timerestoration
Here is the three that I have,
L to R, 1941 10AX with stainless back, 1942 10AX with stainless back, 1939 10AM with Gold back.
Notice the differences in bands and hands, it looks like the center watch has had the lugs cut off at the rings to allow a 10mm band to be used, while the other two have the same end links, the right is a B/R brand and the left is a Bretton.