William and Mary silver porringer

A superb William and Mary engraved silver porringer, marks for London 1694. There is a makers mark "HB" which is a recorded mark from the period. Also the initials S & L and the date 1749 which one would presume was the date the piece was given to someone, perhaps the S & L of the engraved initials? In wonderful condition a rare and beautiful piece of English silver.

Dimensions: 16.5 cm widest point x 9.5 cm x 7.5 cm tall