I wish I had a camera that could focus down that close. The barrels have a lone letter "s" just forward of the flats, as well as the 3 digit serial number. The water table has only proofs, a 3 digit serial number, and gauge listed. The outside of the barrels has only "O.Geyger, Berlin" and the word "Nitro".

The gun has 2 ivory beads, an articulated front trigger, and a proof mark on the stock, a letter "S" with what appears to be an upside down chevron (pointing up) over it, just forward of the rear sling swivel.

One more thing, ... I have seen cased guns that said "Otto Geyger" not Oscar on the case label. Were there 2 different Geyger firms operating ?

GOD BLESS AMERICA.