Here is some more information and pictures of the gun. As you can see this one was certainly used. The hammers are from #1438. Left hammer screw is not original but a Parker screw doesn’t fit so I will leave this “period” repair alone. The decarbonized steel barrels have been cut to 27”. It did seem like there was a little more choke in the left barrel. The buttplate doesn’t seem original, and the buttstock has some filler around the locks. Buttplate looks like a replacement.
Still it’s an early Parker and it makes me want to track down a more complete back action Parkers. I did find the serial number before this one, #170 that sold in 2011. Here is the link, even with the few issues, that is a beautiful gun:
https://poulinantiques.hibid.com/lot...fter-shotgun-/
I would like to have that one! Though I had a lot of fun with the one I own today…