What is this one? Sub related? Thanks

[Frank Heukemes]

In my opinion, definitely, yes.
I think Ludwig specializes in the cloth badges of these, he will surely know more about the smooth fin clasps, but this one, with the Osang mark does not stand a chance. I recently saw one with an Assmann mark on a known fake peddler's site.

[Grant Broadhurst]

This is a 1957 version of the small battle units badge , with the ribbing on the fins as opposed to the smooth fins of the WW2 version .

Someone has tried to pass it off as a WW2 version by giving it a fake stamp i have seen these with Junker stamps .

[AZartman]

update

Came to my attention that one very similar to mine is on the Weitze Site

#85973

€ 3.350,00

[Tim B.]

I wouldn't want it in my collection.
Tim