1 Like
acording to this its a 50’s erma prototype with 32 round mag.
a person on that reddit even typed this: " It is described (with pictures) in the book Die Erzeugnisse der Erfurter Maschinenfabrik ERMA by Holger Schlemeier."
2 Likes
thanks
its on page 719 to 721 of that book . just in case you wanna read more about it 