German soldier , pin ?

[ronin46]

Hi , what is this , comes from the war period .

[Gwar]

Hello! Without any size comparison it looks like an unfinished uniform button of some sort, that has had a photo impressed on it, what is the diameter, can you add a photo with something for size reference ?

[GlennAgain]

It's one half of a picture-locket/necklace... also referred to as Sweetheart Jewelry...
-Glenn-

[ronin46]

Diameter 19mm .