SP, I still have the hammer left over from a previous KCPD RM but it has a broken tip. I've hesitated before about mentioning it to you since it does have a broken tip. It is a grooved humpback hammer that a lot of the Kansas City guns seemed to have.
Just thought I'd run that by you depending on "what will do" for your situation. I don't have a working computer at home now so can't get a pic posted. I'd let it go for $100 shipped.

Roger