Rare and highly sought-after timepieces from Audemars Piguet are now open for bidding at #SothebysGeneva. Highlights include a platinum skeletonized tourbillon wristwatch created to mark the 40th anniversary of the Royal Oak in 2012, alongside a yellow gold minute-repeating wristwatch produced in an exceptionally limited series during the 1990s. Which one would you choose? Share your pick in the comments. Discover these and more in the Fine Watches online sale until 13 May.