Note the >>Imperial Eagle<< on the right side of the water-table which notes that Büchsenmacher Adrian Kowalski in Ahorn sent the longarm thru a German Proof Facility in recent times(May 1990).
The chambers must have been lengthened to 70mm then and that is the reason for the 70 at the bottom of the left barrel flat?

Script >>NITRO<< denotes a pass thru the Z-M Proof Facility.

Nice menacing muzzle.

Serbus,

Raimey
rse