Need Assistance with an Inherited Parker

[Lark Burger]

I'm cleaning out my parents' home and there's a Parker shotgun. I've gotten as far as looking up the serial number - 80432, so I know it was made in 1894, it's hammerless, and it has a damascus barrel. Beyond that, I'm stumped. I got to the page about determining grade, and got no farther than "remove the barrrels." How is that done?

This gun belonged to my great-great uncle; my brother and I think it should either go to the local historical museum which he endowed, or to a collector. It's my understanding that Parkers are considered to be extra-special, so it should probably go to a collector who would appreciate it instead of hanging on a wall and gathering dust.