Old UnderLifter prior to 1874

[Jim Hardwick]

Hi all, I'm Jim. I have this old Parker that's sadly been cut down to a coach gun, that I've been working on for time now, attempting to restore it. The serial number (0284) tells me it's made prior to them keeping official records in 1874. I've Taken a few pic's and am hoping there's a Parker Jedi out there that can maybe ID this ole beauty maybe via the stamps or Font style. I know I can ID some of my Lugers and Walthers via fonts and placement of the letters, hopefully, that works here too.

Any help is greatly appreciated