epa11331052 A Richard Mille 'Prototype 3', Reference RM27-01 Rafael Nadal, a prototype carbon skeletonised tourbillon wristwatch circa 2014, is displayed during a preview at Sotheby's in Geneva, Switzerland, 10 May 2024. The wristwatch is estimated to sell between 800,000 and 1,500,000 Swiss Francs. The auction will take place in Geneva on 12 May. EPA/MARTIAL TREZZINI