Would a 1918 Erfurt have a proof...

[siegersallee]

Hi All,

Would a 1981 Erfurt have a proof mark on the other end of the "Magazine Catch"?

To avoid confusion, I have attached a picture of my 1913 Erfurt to show the part, I am asking about.

My 1913, of course, is marked; but, I am not sure that an Erfurt in 1918 would necessarily but marked.

Thanks,
Richard