I got one at an estate auction about two years ago. Same rifle, same caliber, same case. It also had a Millett 1.5 - 6 x 44 scope on it. $1500. I think I got a really good deal.
I took the scope off, and firing with the open iron sights from 50 yards both barrels hit about the same place, but about twenty inches high! I don't see any signs of anyone fudging up the muzzle.
I put it on consignment in our local gun shop for 6 months at $3000. There was no interest in it whatsoever.