A William and Mary silver Chinoiserie two-handled porringer

A William and Mary silver Chinoiserie two-handled porringer, maker's mark of IY with a horse between, London 1690, circular form, scroll handles, the body engraved with two figures fighting with a sword and spear, with birds and foliate decoration, prick dot initialled with mantling 'I.N' over 'M.B' '1690', height 9.8cm, approx. weight 9oz. ** for maker's mark see Jacksons, Ian Pickford Edition, The Antique Collectors Club 1989, page 141.