A French 18th century gold open-faced key-wind pocket watch

A French 18th century gold open-faced key-wind pocket watch, the white enamel dial (damaged) with black Arabic numerals and numbered in red '981 à Paris'. The bezel set with half pearls and similar pearl-set bezel to the reverse containing a cover with dark orange guilloche decoration with white graduated cruciform design. Unidentified French marks to the inner case with later 9ct gold mounted black silk fob and small fob seal mounted with a carnelian engraved with a small bird. The watch 3.5cm wide.