Interesting thought because of the different metal composition (not silver) but there are so many devices that line up on the denticles I'm wondering if it might have been struck as a presentation piece?
The only letter that seems line up differently on a denticle, between the OP's coin and the one on Numista, is the R on Reich. If authentic that would indicate a slightly different die variety.
An overlay might be the best way to compare this coin to a known one, like the one on numista.
EDIT: Just noticed the K of MARK lines up differently as well and that the silver version was 1913.