Juice Glasses with Spinning Wheels and Wood Doors, Set of 4

A set of four little juice glasses each featuring a band of green and white fired-on images of a spinning wheel in the center flanked by wood doors with offset hinges.  Each glass has a thick glass bottom and measures 2 1/4" wide and 3 1/2" high.  The maker is unknown and the condition of each glass is good, with crisp imagery and little signs of use.