Please see HA Crosby Forbes. J.D. Kernan and R. Wilkins Chinese Export Silver 1785-1885, Milton, MA, Museum of the American China Trade, 1975, fig. 31, for a conforming three piece tea service, maker's mark of Wongshing. "Although there is relatively little work so far observed bearing the third mark WE/WE/WC, all of it displays the finest workmanship. The mark is not yet attributed to any maker".