Serial# K247296 Excellent Condition. Skeet, Skeet Barrels. Made in Japan. No trades. CHL or TxDL + bill of sale required. The Winchester 101 shotgun is a over-and-under double-barrel shotgun that was first introduced by Winchester Olin in 1963. It was designed to be a reliable, high-quality shotgun that could compete with other top-level sporting shotguns on the market. The design of the Winchester 101 was based on the classic Belgian Browning Superposed shotgun, which had been a popular choice among sportsmen and competitive shooters for many years. Winchester wanted to create a shotgun that was just as reliable and well-made as the Superposed, but with a few design “improvements”.