Figure 26 Plates and dishes, Staffordshire or Yorkshire, 1775–1810. Creamware and China glaze. As suggested in this grouping, tremendous variations of the Chinese house pattern were used in conjunction with the shell-edged rim treatment on both creamware and pearlware dishes. This assemblage provides strong evidence that many potters produced these wares. They are almost never marked, generally have rococo blue shell-edged rims, and date from 1775 to 1800. The introduction of underglaze transfer printing in Staffordshire in 1784 may have reduced the market for Chinese house pattern painted wares. The occurrence of plates and other tableware painted with the Chinese house pattern is relatively rare in the American archaeological record. Conversely, large numbers of antique plates and dishes seem to survive in England. This dissimilarity, perhaps reflecting a difference in the market, warrants further investigation.