LOT 264 £300/400 (01:49PM)

Two antique fob seals, one late 18th century, in gold set with an agate intaglio depicting Sir Isaac Newton in profile, with comet at his back, his likeness after a portrait by Sir James Thornhill – three versions of which he painted in 1709-1712; the other seal early 19th century, in gold finely worked with rococo scrolls and set with an agate engraved with initials