21 Ceramics for household purposes; porcelain ware; pottery; daily use chinaware (including basins, bowls, plates, pots, tablewares, crocks, jars, cans); daily use pottery (including basins, bowls, plates, crocks, jars, cans, marmites, pots, stoneware tablewares); imitation procelain; imitation pottery; works of art of porcelain, terra-cotta or glass; statuettes of porcelain, ceramic, earthenware or glass; crystal [glassware]; works of art of clay.