拍品专文
Refer Jewellery 1789-1910 by Shirley Bury page 365. Henry Ellis & Son registered a safety fastening in the form of a sheathed pin under the Utility Design section of the Designs Act. Five specimens were purchased by Queen Victoria as gifts for twenty-eight pounds ten shillings in 1848. The silver from Coombe Martin mine was a by-product of tin refining.