Silver mounted rock crystal snuff box, England early 19th century

A silver mounted rock crystal snuff box.

The mounts although unmarked stylistically appear to be English and dating to the early 19th century.

Measures 4.7 x 3.9 x 3.2cm.

The form of the rock crystal suggests that it may have been made for a pocket watch but left unmounted or recycled, the rock crystal is 19th century or possibly earlier. See the last image for an example of a German rock crystal pocket watch dating to the 17th century in the collection of the Metropolitan Museum of Art, New York, Accession Number: 24.104.1.