My grandfather's Remy Model 11 was given to me and then stolen in a burglary. My dad's Knickerbocker survived the theft and I still own and sometimes shoot it. It's a 20. My dad shot it for the remainder of his life. He had it gussied up once in the 50s. I never saw my dad miss a shot when shooting that little 20. Not once! You can have my house and my cars, but I'm keeping that little shotgun.

My paternal grandfather was a gun guy. Had a collection back before collecting became a thing.
All lost due to my parents divorce, and miscalculations and other long stories. Thank you mom.
My maternal grandpa also had a couple of shotguns, but divested all but a single shot .410, which hangs on my office wall. I would never part with that little 20 dollar klunker for money.
I'm trying real hard to not be judgemental here, but I am puzzled a little bit by people who need to put a monetary value on family heirlooms, unless for the purposes of insurance.
My paternal grandpa captured two armed bank robbers in Perris California back in the 1930s with a single shot trap door .45/70 after disabling their car with the one chambered round.
How much is that rifle worth would I ask. NEVER!

There is a huge difference between the mind set of the folks who regularly post here and the general population. To most of the general population that old Parker shotgun left by whomever is just an object to monetize.

My great uncle Charlie who lived in Philly had a brother Frank who lived here in suburban MD; one of Frank's closest friends was an ex-Canadian Mounted Policeman who pursued, cornered and captured a desperado who had killed another Mountie with a M 1911 Colt .38 Super. When the ex-CMP died he left the Super to Frank. When in our early teens, my father would take my brother and I over to visit old Frank periodically, and we always found a way in conversation to have Frank show us the gun again. There was always something sinister yet beautiful to me about the gun; knowing it had taken the life of a lawman but remaining in what I remember today would be referred to as a 90-95% gun. When Frank died he left the gun to his only son, also a lawman in the MP. Telling their histories is another way to preserve the heritage of the men and women who made and used them in the romantic as well as the violent past.