Hey.
It is true that the gun has been stored and forgotten in the barn.
I know that the shotgun was on the farm in 1949 (was toled by my grandmother), but they do not remember when it was purchased. I would guess between 1945-1949. There was a lot of German troops in the area where the farm is located in WWll, and therefore believe the shotgun was not traded during this period.
The farm i locaded outside Bergen, Norway.
I plan to brush away the rust, the shotgun is better in the barrels and the mechanism is quite nice on the inside, wonder if hammers have been cut, for they can not possibly make it to the firing pin as it is now.
200FF was about 200 NOK in 1900, in todays value that is 12000 NOK that is 2 126 US dollar.