Lang 10-bore ball and shot gun

This Lang 10-bore is a smooth bore for ball. The sight leaves all fold flat to use the front bead when shooting shot and individual leaves can be upright for ball or conical distances. 28" barrels non-reboudning hammers, Jones under lever.  Proper 10-bore proofs and also nitro proofs. The former owner stated to me this may have been one of a pair of 12-bore shotguns and long ago bored out to 10 gauge. However, the proofs are 10 and the rifle sights are correct. I've shot ball to 50 yards and broke clays and shot grouse with her! 2 7/8" chambers. Price SOLD.