All four of these were given to me and my wife by my mother-in-law. They belonged to my wife's father who passed away ~17 years ago. They have not been touched since he passed away. He was a policeman. They appear to have been fired very little, and they're in pretty good shape, especially the Colts. They have some smudges, but it's because I haven't even wiped them down yet. Any tips for cleaning and taking care of these? I've never owned a revolver and honestly don't know too much about them. Anyone have any guess what they're worth? I don't want to sell them - I'm just curious what we have. #1 - Colt Python. Serial number dates it to 1975. ----------- #2 - Colt Trooper MK III I'm having no luck dating this one. Serial # J39##0. I tried looking it up at proofhouse.com, but didn't really have any luck. Maybe I'm reading their site wrong. ----------- S&W Model 66, 4" I don't know as much about this gun. I can't locate an online serial # lookup and I don't have a book. The box still had the original receipt showing it was purchased in Nov 1978. So, I'm guessing it's right in that range. The serial # is 41K46##. ----------- S&W Model 66, 2" I don't know much about this one either. It was in the original box, but didn't have a receipt. It appears to be almost identical to the 4" model - they may have been purchased around the same time.