* screw-on case back with special "light" engraving :
* manufactured and delivered to the U.S. Army = 25
Vintage Information / JRD
Below, from Omega's vintage department. This was in reference to a specific watch belonging to someone else, not mine. I am convinced my watch is not one of these Army watches, but was one made for civilian use. Mine has no case markings. But is is otherwise an identical watch.