Sorry, deer season has kept from checking in on the forum...no, the Winchester 21 Trap is a 12 gauge with 30" mod & full barrels. Many military officers who were stationed in Japan had guns engraved there. This is why I suspect the engraving is from a Japanese engraver. The scroll looks very much like the scroll I've seen on some high grade Miroku guns. I would just like to know some history on the gun.