I did some research and couldn't find much but I believe this to be part of a Hubley detectives gun? I can't find much info and am unsure if my Id on it is correct. Any info would be appreciated. There are no markings. I ran it under water just to rinse off some of the dirt. Hopefully my image works asiI'm posting from my phone and not quite sure how to share photos. Thanks!
It's not an exact match, there is a diamond where the rivet goes in the grip of the one on the website, also it has a different grip angle, and the trigger guard is slightly different. Maybe different runs of the same type?