It's a brass framed italian repro, not sure of the maker from those pics. It's a sheriff's model, meaning a shorter barrel. It has the roll engraved cylinder and it has a nice tall front sight compared to most of those so it might not shoot as high as they usually do.
The date code AP on the frame corresponds to 1986 as the date of manufacture.
If you can see and handle it before purchase, check the bore and chambers for pitting or rust, but from the pics it looks like it was cared for pretty well. It looks decent, might be a good shooter.