Reproduction WW 1 & 2 American Field Service, cap badge. 
Stamped silver colored metal with pin back fastener.
The AFS drove and supplied ambulances for the US & Allies. 
Size is 3 x 1 3/8 inches.
Listing is for 1, stock photos show front and back.
Thanks for shopping NCHSinc.
Store use only:
Rack 22, Shelf E