Who knows, I can just imagine the widow asking a relative or friend to sell this shotgun and the other set of barrels are leaning in the corner of the closet or I can see the puzzled looks on their faces as they look at 1 and 1/2 shotguns on the kitchen table....
I can only hope, as I would think the 28" barrels would have been made for Skeet or upland hunting.
The other thing I hadn't mentioned is it was built or converted from a single trigger gun as it has a L and a R on the floor plate under trigger guard, hope the letter sheds some light.