Rolling block actions were really popular for this sort of gun in some of the Scandinavian countries. Lots converted from military surplus guns, lots more made from new as shotguns and various rifle calibers. Carl Gustav and Husquvarna both made lots.
Any roll marks on the tang, top or bottom? Remington usually marked theirs there, if nowhere else, and they made and sold actions in bulk as well, from what I have read.
What did you have in mind for it? It looks to be in pretty good nick, as far as the general condition goes. Better than a lot, in any case. Would like as not hold up quite well as a 38-55 or 45-70, at BP pressures, with a new barrel. Some new wooden ware might be an idea if you wanted, too.
Cheers
Trev