Antiquorum's May auction of "Important Modern & Vintage Timepieces", held on Sunday, May 16 at the Geneva Mandarin Oriental, totaled 7,675,999 CHF, with 80% of the lots sold. This brought the total of Antiquorum's spring sales to 14,133,936 CHF. In addition to strong in-room attendance, there were many telephone and Internet bidders, with international participation coming from Hong Kong, Singapore, The Netherlands, Belarus, China and Japan. The top lot of the auction was the unique and exceptional Vacheron & Constantin "30 days, Constant Force" clock made in 1933 (lot 579). This Art Deco masterwork brought an impressive CHF 242,500.