This is a set of 2 Vintage Otagiri Japan Blue Double wing airplane biplane Coffee / Tea mugs / cups. The mugs are very nice and unique with gold trim graphics. One is a dark blue and other other is a very light pale blue. Gently used with no chips or cracks. Measures 3 7/8 " tall and 2 7/8" in diameter. One has the stamp Otagiri Japan at the bottom. The other does not. Overall in very good used condition. Please see all of the pictures for an accurate description. These are from an estate and are rare / collectible. Please email me with any questions or concerns. Thanks for looking.