Quittenbaum Kunstauktionen GmbH Lot soldUSD 2 429 - 3 036EUR 2 000 - 2 500 (listed)EstimateUSD 2 429 - 3 036EUR 2 000 - 2 500 (listed) See all lots Italy Quittenbaum - Masterful Exuberance - The Marie and David Cooper Collection Volume II | Munich, 29 May Summary Lot number 71 Year of manufacture 1920 Location Description 4.5 x 2.8 cm. 750 yellow gold, clasp with sapphire. Inscribed inside: maker's mark, 750 (embossed).