I was at my dealers shop this morning, window shopping, and he's got a pre M-10 5 screw in his case. Nice tight gun about 90%+ on the finish, slight holster wear at tip of barrel, and slight wear on some sharp edges, no pits or scratches. Grips are mint and numbered to gun. Patent Feb.6, 06.Sept.14,09,Dec.29,14 on 6" standard barrel, ser.# S 819***. He's asking $300 firm, my questions are DOB and is his price in the ballpark ?? TIA