A William & Mary circular silver paten, London 1691 Makers marks of IS separated by a pellet and Maltese cross not found, the body with deep feather garooned rim and moulded border and a central "Wolf's Head " armorial crest to the sole, supported by a simple conical foot with conforming spreading circular base. 10.5 ozt, 20 cm diameter x 5.5 cm height.

Please see a very similar example with an identified smith

A private estate