Looks like it had a neglectful owner along the way or a bad experience.

Under the barrel to frame yoke cut out I can see the S and it looks like a molested Number. On a model gun this should match the butt number.

I don't think there are any 5 digit 28-2 Highway Patrolmen. I have an earlier "pre" model from around 1955 that has serial number S 1324xx a 6 digit number. I would clean up the buttt well and check for 6 digits after the S