Mike, your gun looks the same as mine except mine's a toplever.What's that striated look on the lower action body? Mine's the same(almost looks like unetched damascus?).Seems like really thick steel in the breech area. Mine was proofed at 850 BAR 70mm. Other marks are 18.4, "arm with sword" over NP, WI, GP, LP over 01, 12 and C in a diamond, and "CHOKE".Any idea on the age?