I'd shoot the low base shells, Like the Dove & Quail loads or trap loads. I wouldn't even think about shooting the high base shells in a gun this old. Buckshot & rifled deer slugs would probably split the barrels. Some of them old guns have the Damascus Twist Barrels, they are not that safe with the new ammo we have today.
Low base shells you should be OK.
It you decide you want to sellit I'd be interested in it. I had one frobably about 40 years ago and use to shoot grouse & rabbits with the one I had.