Golden Wheat dishes were offered in boxes of Duz detergent in the 1950s as a promotion. The pattern was produced for Duz by several manufacturers including Homer Laughlin, Scio Pottery, and French Saxon China. The dishware was charming. Tons were produced and many are still available. I wouldn't put too much effort in researching the marks on this very common dishware. It is easy to find for low prices at thrift shops.