High grade stoneware body with an individually hand-formed handle and dynamic black glaze throughout. The inspiration for this mug is a reproduction from an illustration used with a 1929 "GP" Tractor sales folder announcing the Model "GP" General Purpose Farm Tractor. This model with steel wheels was produced by Deere and Company from 1928-1935. Using the original illustration, we now feature a counterpart view showing the other side of the tractor. Official Licensed Product.