Hi Steinar
It does have that mark so according to given information the hold open was added later.
Finding a shooter grade Luger could be a huge problem her in Iceland. Lugers are wery few and far between here, importing not allowed and the price high. Getting an oppertunity to buy one is almost a once in a liftime chance, so getting another one is almost impossible.........but who knows ?
I have been in guns for years and first got my hands on a Luger this year.
But there is always room for one more in my safe....or two........or......????
Gretings !
Ingvar