Two hardstone snuff bottles

Two hardstone snuff bottles
18th/19th century
The first a well-hollowed quartz bottle carved in low relief to resemble a Spanish coin, the front with a portrait of Charles III in profile, inscribed and dated 1779, the reverse carved with the Spanish coat of arms within additional inscriptions; the second a thin-sectioned chalcedony bottle standing on a sensitively finished oval foot ring, the luminous stone of even brownish-yellow coloration.
1 7/8 and 2in (4.8 and 5.1cm) high