Jeanne Mammen (1890-1976), Kaschemme, circa 1929. Watercolour on paper. 44.9 x 32.7 cm (17⅝ x 12⅞ in). Estimate £50,000-70,000. Offered in The Golden Twenties Berlin through the Eyes of Modern Artists, 22 October-12 November 2020, Online
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