Two unusual articulated hardstone set watch keys and two miniature seals, circa 1800, the first of oval form, the hardstone panel engraved with a monogram and crest, triple hinged to facilitate the use of the seal, the bow incorporating a sharp curved hook, 53mm overall; the second of oval form with plain striated hardstone centre, triple hinged, the frame with sharp curved hook, 45mm overall, two miniature harstone set seals, one engraved with a classical profile, the other with a bird.