A collection of four 18th and 19th century enamel plaques

A collection of four 18th and 19th century enamel plaques,

comprising: one of circular form with playful putti on a stubborn billy goat, the reverse with a collection label number, diameter 2.7cm, one of circular form, with a lady and a bird cage, within a gold mount, diameter 4.2cm, another with a classical maiden, diameter 4.8cm, and an oval plaque with a standing lady in a translucent yellow dress, length 2cm. (4)