I have an A-1 #793 30 inch with a second barrel 26 inch. They are both Damascus, the 30 looks similar to the 3 iron but no proof stamps. The second set have a pattern I haven't seen before, not chain but with a pattern that almost looks like "&".It also has a fitted forearm with early ejectors lesser checkering and early round release with less engraving. It is serialized #793 with "W 1 E" stamp on the strap below the fore end lug, no other markings. Letter doesn't show a second barrel in the ledger.Any ideas on the pattern type of the second set? Thanks MY