Lee's on the track here. Serials started in 68 on this Model and the date codes stopped in 71 or so. The D prefix on the serial would put it around 79-80. Does it have a selectable hammer and are the barrels slightly separated? The '52 Model 24's had neither of these features. Just because the previous owner was an old fahrt like me doesn't mean he couldn't have bought himself a neat, new little combo gun in the early 80's.
What's the old rule of thumb? Buy the gun not the story.
