The American Belleek era spanned from the early 1880s until 1930. Several American firms manufactured porcelain wares resembling Irish Belleek. The first was Ott and Brewer Company of Trenton, New Jersey, from 1884 until 1893. Companies operating between 1920 and 1930 include Cook Pottery (1894–1929), Coxon Belleek Pottery (1926–1930), Lenox, Inc. (1906–1930), Morgan Belleek China Company (1924–1929), and Perlee, Inc. (1920s–c1930).
Reference: Mary Frank Gaston, “American Belleek, Collector Books,” 1984, out of print.
— Harry L. Rinker
“Official Price Guide to Collectibles”