Bulbus - there is one order for Mc44 bats on October 5, 1983 - 18 pieces - 34" long and 32 ounces - Walker Finish. The order is under Baseball Miscellaneous and not by the New York Yankees. It is quite possible that the team that Mattingly played for in Winter ball ordered those bats. This is the vague area in modern records - where the team has not ordered the bat for the player and we really do not know who placed the order. If the bat shows Mattingly use characteristics and you feel good about the source / provenance, its probably a legitimate piece. The two tone finish is the commonly known "Walker Finish" made popular by former major leaguer Harry Walker who ordered most of his bats with hickory barrels and blonde / golden handles.....hope all this helps and if you are ever interested in selling your Mattingly bats, I am always buying. Jim Caravello