Clockhand indicator - the in battery or fired indicator on the outside of the lock.
DRGM - Gebrauchsmuster - novel idea or petty patent giving protection for a 3 year period & could be extended.
207M - some barrel number
Holes above & below of the firing pin holes.
Yes, a Prussian but what you have is a war trophy; therefore, an inland. It wasn't exported or imported into the U.S. of A. so a country of origin stamp is not warranted.
Possibly safe to shoot w/ appropiate pressure. You need a cartridge w/ a load that duplicates the pressure for 4 3/4 Dr. Eq. of S.P. Powder.
Cheers,
Raimey
rse
