Hi,
I acquired these 3 WWII military badges a while back, and I thought that all three were authentic. Someone recently told me that all of these pieces that are authentic have raised lettering on the back, instead of engraved. And also that the pin back should only open about half way instead of flipping all the way back. My large Nav pin does have these characteristics. The gunner pin opens all the way, and also has engraved "sterling" on the back. My small nav pin only opens half way, but the sterling mark is also engraved. Can anyone help me figure this out? Thanks!
From top to bottom:
Photos 1&2 = Small Nav
Photos 3&4 = Large Nav
Photos 5&6 = Gunner