The arms are those of Bishop Silvio Valenti Gonzaga of Mantua, created Cardinal in 1738. See D. S. Howard, op.cit., p.61 where the author suggests that this service is the earliest datable armorial enamel, since it depicts a Bishop's hat, it was probably made before the date when he was created Cardinal. Other plates are illustrated by The Chinese Porcelain Company, Chinese Painted Enamels of the 18th Century, Exhibition Catalogue, no.67, p.78; by M. Gillingham, Chinese Painted Enamels, Exhibition Catalogue, no.105, p.81; and a similar plate in the Royal Ontario Museum, Toronto is illustrated in Silk Roads, China Ships, p.120; and for a larger dish illustrated by J. A. Lloyd Hyde from his own collection, see Chinese Painted Enamels, The China Institute in America, Exhibition Catalogue, no.39, p.31