I'll throw in my numbers, but pic's will have to wait. Don't remember last time I dug out my 19-3 Serial number KB92xxx. ($200.00) Years ago I converted it from service trigger and hammer to target trigger and hammer. Don't have a clue where the parts are or came from.
Second is a 66-2 that sports a bobbed hammer. The original DAO long before the factory's did it. Serial number on the 66 is 239Kxxx.
($225.00).
Don't know where that original hammer is either. They're probably to gether and long gone.
The 19 was retired in favor of the 686's and all the N Frames sold off 'cause after the L frames came out you could't give the N frames away.