The "bands" Raimey spoke of is a sign of either rebarreling or the initial barrel construction being on a monobloc, which would be a little unusual for a rifle of that age. As I said above, to determine which is the case would require either a "hands on" inspection or much better photos, otherwise it would only be conjecture. It is unfortunate but the additional photos don't help matters much. It would be expected that a determination will be difficult, the people that usually do this work are not called a "master"( meister) for nothing.
Mike
