Howdy all, quick question about a k frame pre model 10. I just traded for a 4 inch tapered barrel (standard for the purists) with a round butt and diamond service stocks. Think grooved trigger and wide target hammer. Has a serial number of C2765XX (XX=last two digits omitted) and was wondering the year of manufacture and if any one knew of this model coming with a target hammer of if that got added along the way. - Thanks Joe