Soldering the rings or part rings to the scope is something I would associate with older German guns. It is not uncommon on them. If the scope is still good, and in a size you like, there's probably no issue with it. You need not be tied to that scope, nor to soldered-on rings - changing scopes will however required someone who knows what they are doing to hand-fit the new claws to the bases.
Just un-soldering the rings requires the scope being disassembled down to the tube, so that scope is not a viable one for much of anything, IMO. You're far better off having a Recknagel swing mount system installed on a gun and use 1"/26mm rings or 30mm rings and a modern scope.
An older steel tube scope with soldered rings and no matching bases is pretty much just a steel club or spyglass. If you have the gun the scope goes on just live with that or do Recknagels. Page 27 - 28 of catalog 11