48H Wheat shocks, clay blue glaze. 4/3 hole set, type 1-Ada. This clay is actually early transitional clay from 1954. That is to say it is a mixture of Ada and the new red Sapulpa clay. Frankoma took most of 1954 to make the gradual clay change so a full range of transitional clay colors exist. They are, however, not very common. Frankoma introduced the new glaze clay blue in 1953 just as the clay change was about to start.