This is a very nice vintage Nokona U.S.A.Chief-Tan Baseball Glove, model F100.  I believe it is 11".  It has been well taken care of. 

This game-ready glove is perfect for all positions on the field and ideal for elite players. Made from high-quality leather, this vintage glove is in excellent shape and ready for use. The brown color gives it a classic look that is perfect for baseball enthusiasts. The glove is designed for right-handed players and is suitable for baseball.