BarklyVA,
The number 118,35( the Germans used a , where we use a .)is the bore diameter as measured by the proofhouse and expressed in gauge measurement. This marking is often found on the various 9.3 rifles and some 9mm rifles(9x58 1/2 S&S).The caliber is likely 9.3x72R instead of 9.5mm.In my experience the markings on your gun usually equate to a bore diameter( not groove or bullet dia.)of around .357-359" which is good for finding bullets. Gotthilf in Nordheim was likely a dealer, not a maker.The number 6,07 is likely the date it was proofed(June 1907) and 1007 is likely the ledger number. At this time Suhl didn't date their proofs or show ledger numbers, therefore, it is likely your drilling was made in or around Zella-Mehlis.BTW a drilling of this age would be "short chambered"( 2 1/2-2 9/16" instead of todays 2 3/4" chambers).
Mike

Last edited by Der Ami; 07/04/14 10:32 AM.