Kinda looks like a prop gun Python. It's missing the scallop on the top front of the frame. Also has some weird looking circles on the barrel and side plate screw location. Just a wild guess.
I can't remember the brand name, but at least at one time there was a South African manufacturer making a doppelganger of a Colt revolver that, predictably, looked basically like a Colt but not quite just right.