I have seen a few 10/12 sets. Perhaps you could find a donor gun in 10 or 12 to liberate a set of barrels from. I know its almost a sin to do this but using a lower grade gun barrel to return this gun to service might be a option. At one time I had several dozen orphan barrel sets hoping to find a use for them all. I did use about a third of them to either return a gun to service with bad barrels or make a composite two barrel set. Gave up on most of the rest except for a couple very early Lefevers and Fox. For every set which I could fit I had many, many which were not even close. Same make doesnt not mean a good match and Lindners seem to have changed slightly over the years such that getting a easy match is going to be luck of the draw. But you never know.
