if i was going to guess (which i am), wouldnt this item be more likely from a dagger or sword sash, or some such ceremonial item?
happy to be sooooo wrong!
I agree that this is likely from suspenders. It has nothing to do with an edged weapon. There is no reason to think this has any relation to the 3rd Reich. The swastika is an ancient good luck symbol used in many Eastern and Western cultures.
LIFE'S LOSERS NEVER LEARN FROM THE ERROR OF THEIR WAYS.