Prof.
GEORG KLEEMANN 1863-1932
Superb Jugendstil Brooch 
Gold, opal, plique-a-jour enamel, ruby & pearl
Marked: '18ct' 'MBCo'
Length: 3.3cm Width: 4.6cm
German. Circa 1902
Fitted Case
Literature: cf. Theodore Fahrner Schmuck, 1990
Schmuckmuseum Pforzheim, page 110, catalogue number 1. 73
Schmuck in Deutschland und Osterreich 1895-1914
Ulrike von Hase, 1977, page 221, catalogue number 262
Collection: Schmuckmuseum, Pforzheim