I still have two of the early ones, a true Win 101 and it's perfect twin marked Nikko. Engraving and everything is EXACTLY the same. The only difference is on the bottom of the frame one is marked Winchester over Olin/Kendosha and a the other Nikko over Olin/Kendosha. Both were bought new in Taiwan in 1966. The 30" F&F Nikko was my International Trap gun with many K's of 1 1/4oz nickel 7 1/2's down the bore, since re-choked to SK-II and IM for shooting birds at Hunt Tests. The 26" SK&SK Winchester I used for International Skeet and still keep in WI incase I want to fly back for some grouse hunting.
Both guns have been wonderful companions over the years and have done yeoman service in the field also.
With the numbers you listed it sounds like a late 70's or 80's shotgun.
Last edited by oskar; 11/20/13 10:11 PM.