Interstingly I couldn't find any date code on this movement so I am basing the year on the first digit of the case serial number.

Hinged case is 14K White Gold Filled

The movement is marked L3 and the case is marked L4  Very nice shape and a very intersting design to the case.

Very nice two tone hinged case and marked 10K Roled Gold Plate and hidden lugs.  The movement is marked for 1933 manufacture date but the cse serial number indicates it was made in 1934.

The movement is marked for 1943 date but the case serial number indicates it was manufactured in 1944.

10K Roled Gold Plate over Sterling Silver. (to save brass for the war effort)

10K Rolled Gold Plate bezel with stainless bck.

10K rolled gold plate case

Hinged case

14K White Rolled God Plate

Light wear through on the bezel corners but the rest of the watch is ooking great.

This is double date stamped with the X and T 

Has a 14K Gold Filled Rose Gold case

The case has hidden lugs covered by the 1/2 hexagon tops.

The case measures 21.2mm x 22.1mm not including the covered lugs.

This is very similar to the Broadcaster of the same period but not as tall.

I'm always a sucker for one of those black/white/gray explosion dials. This Ambassador "C" is sporting one of the "AAA" 21 Jewel movements.  The lugs are very close together and it will need a unique band to fit.