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This is the Bulova Blackhawk is double date stamped with the Circle and the Triangle for 1944-45.
This model was originally thought to be a Bulova Surgeon, but recently found ad's show it to be a military styled watch. It is quite possible that the Blackhawk and the Surgeon are the same watch with a dial variant as we have found was done with several models in the WWII-era watches, one for civilian and one for military motif.
Identification found here in a 1941 Montgomery Ward Ad for the Blackhawk
(all pictures were taken with the crystal removed for better clarity)