I bought a Nagoya, series 6, ground but matching at a gun show. Got it home and took it apart to do the usual inspection and cleaning. That's when I discovered it was duffle-cut. I still see the little weasel I bought it from at gun shows. I got it at a reasonable price, which is why I didn't get too upset about it. If I look at weasel's guns for sale I ask him "what kind of a surprise am I going to find on this one". He could have told me about the cut. I probably would have bought it anyway because the price was right. He's just the kind of guy that personal honesty and integrity is a real challenge for him.
The repair worked out fine, and was a good learning experience. As my "gun show partner" said, "it's part of the history of that rifle".