That is a fine build on average. It would be anywhere from the late 80's to late 90s. Depending upon when, it might have a square butt or round, and wood grips or rubber. But it was before the lock and the hammer changes some people don't care much for. Checking out an individual gun per the "sticky" is more important than what engineering series it is, however. Sorta like a used car - maybe you want a certain year range for the features/look, but you still need to check into the condition to make sure it's not been neglected or abused.