I'm looking for some Colt collectors to give me some thoughts on this. My dad has recently experienced some serious health issues, so I'm helping him sort out a few things. Included in that is the fact that he wants my brother to have an old Colt revolver that's been passed down through the family from long since. Unfortunately about 35 years ago my mom had it nickel plated so that it would be a better presentation piece.... She didn't know any better. Please withhold your comments on that. When I give it to my brother I'd like to give him some background on it. Dad doesn't have anything on it, except that he received it from the family estate back in the 60's when my great-great aunt was parsing out family history to various members of the clan. No further provenance. This looks to me to be a 1862 Colt Police revolver. I don't think it's a conversion from the old percussion revolvers. Rather, I believe this is one of the 'new model' revolvers Colt started to manufacture to accept cartridges instead of percussion. I found this link: Colt 1862 Police N.M. Breach Loading Revolver The serial number on Dad's revolver is only about 25 off of the one shown on the block. That would put it manufactured in 1871. So, what do you think?