Hi. I am working on an Eglin 581 military watch, and I am going to need a couple of items for it. One being a white mainspring and the other a click wheel. Does anyone know if parts from a 571 or some other more common Elgin can be used in this watch. The mainspring is the biggest problem.

Frei and Borel thinks that the mainspring from a grade 478 will work. There seems to be absolutely no info on these Elgin military watches.

Scott these i think were made from the Bw raymond 21 jewel movements with the sweep second hand bridge and jewel added too make it 22 jewel like hamilton did with the 4992b being based on the 992b .