Reiterating what Snow Dog said, find a nice place to hang your shotgun on the wall and admire it from there. It is not safe to shoot. The laminated steel barrels aren't suitable for today's ammunition, even if you can find a shell that will fit. I've got a similar Belgian-made gun that was imported by the thousands in the early 20th century. Totally unsafe to fire, but a very pretty gun and it looks quite nice over the mantle of the fireplace.
Shotguns like that were cranked out like crazy from the late 1800s to the early 1900s and sold by all sorts of outfits for $9.00 to $20.00 (not chump change for the time, but not terribly expensive). Lots of farmers and casual sportsmen bought them. There are quite a few around, but nothing like the quantities that were originally made - they just didn't last.
I always thought that it was interesting how they made the barrels: they wound steel wire around a mandrel, then heated and hammered it to make a solid steel tube. Not the strongest thing around, but capable of handling the loads of the time, at least for a while. And cheap to make.