I've never come across this before. I'm presuming the late war contract American
75mm types (Field gun or AA) . It appears to have been made for the British market.
3 3/4" x 5" overall, metal loop on reverse holds picture in place under tension.
75mm types (Field gun or AA) . It appears to have been made for the British market.
3 3/4" x 5" overall, metal loop on reverse holds picture in place under tension.