A late 18th/early 19th Century mourning bangle

A late 18th/early 19th Century mourning bangle, the central panel painted with a lamenting widow, within blue enamel border and a bezel of paste stones, within a pierced gold mount of leaf design, on rail bracelet, the back glass hair locket panel revealing inscription 'John Herbert 1791', 6.2cms wide, 35.9g gross, in fitted box.