[DonVoigt]

I would not mess with the magazine either; leave it original- any work would only raise questions about it. JMHO.

As to value, surely you know what you paid/traded/have in it; that is a known value basis.
You no doubt know that luger prices are all over the map and any single item depends not only on how "nice" it is- but where, when, how, and to whom it is sold!