Sgt. (E:-5-6-7-8-9?) thanks. I believe you are right-the gun originally had Damascus barrels and was sent back after WWI and re barreled-wonder if Smith, like Fox-used any German Krupp barrels (until we entered the War and that ended that I would guess). The barrels are an even length and are choked Imp. Cyl. right (.012" constriction and Full? left (.024" constriction-have 2 and 3/4" chambers and the choke tapers run about 2.75" backl from ther muzzles- gun is tight and "on face" and I would love to own it-