CHRISTIAN FRIEDRICH ZINCKE (1683/84-1767)
A Gentleman, facing left in blue cloak and white cravat, full bottomed powdered wig
enamel on copper
oval, 1 5/8 in. (42 mm.) high, silver-gilt frame with reeded border and spiral cresting
Peter Kaufmann Collection; Sotheby's, London, 13 October 1975, lot 33 (part lot) (£500).