U.S. Jumpwings

[mabrgo]

Picked these up a while back. It is still on its original issue card and in its packaging. Obviously I can't remove it to see the back, so I was wondering what anyone else here can tell me about them. The staple on the package is rusting, so they must be somewhat old, but I have no idea. Any info on its authenticity and year would be greatly appreciated. Thanks in advance
Matthew

[NickD]

they're WW2 era pin back jump wings on the back should be a makers stamp & the word sterling im not if anyone can tell you any of this from just pictures of the front but as you say you don't really want to take them out of the original packaging so you may never find out ???