VAN CLEEF & ARPELS - YEAR 1956 COMMEMORATIVE GOLD MEDAL This 18K yellow gold medal was struck at the Société franco américaine de banque to commemorate its 10th anniversary: 1 August 1946 to 1 August 1956. Hallmark of the Georges Lenfant workshop. Gross weight: 17.39 g. Diameter: 2.6 cm. Van Cleef & Arpels case. An 18K yellow gold commemorative medal for the 10th anniversary of the Franco-American Banking Company (August 1, 1946 to August 1, 1956) by Van Cleef & Arpels, 1956. French assay mark and Atelier Georges Lenfant maker's mark. Gross weight : 17,39 gr. Diameter : 2,6 cm. Van Cleef & Arpels shaped box.