price of 3.28 million US dollars (HKD 25,300,000), becoming the most expensive timepiece ever auctioned in Asia. The timepiece boasts 21 complications, including Westminster Chimes, minute repeating, lunar orbit and so on, and was made in 2008. On November 11, 2014, the Henry Graves Supercomplication was sold at Sotheby's Geneva Auction for a record-breaking US$23.98 million (CHF 23,237,000), becoming the most expensive watch ever sold at auction and held the title until November 9, 2019. The Supercomplication was made in 1933 for the prominent banker Henry Graves Jr. The ultra-complicated pocket watch (having 24 complications) was the result of Graves' friendly horological competition with James Ward Packard. After Graves' death, the watch was held by his daughter, and then by his grandson until 1969, when it was sold to Seth G. Atwood who kept the watch in his renowned "Time Museum" in Rockford, Illinois until 1999. The watch was auctioned for the first time at Sotheby's in December 1999 for a record-breaking US$11 million to Sheikh Saud Bin Mohammed Bin Ali Al-Thani of the Qatari royal family. On November 12, 2016, a Patek Philippe Ref. 1518 in steel took the title as the most expensive wristwatch ever sold at auction (until October 2017). Sold through Phillips' Geneva auction house, the watch fetched a final price of US$11.14 million (CHF 11,002,000). This was the first time that a steel-case Ref. 1518 (only four were made in steel) went for auction; in fact, this piece was the first of the four steel Ref.1518 manufactured, which features a chronograph and perpetual calendar. On November 9, 2019, Patek Philippe Grandmaster Chime Ref. 6300A-010 became the most expensive watch ever sold at auction, fetching US$31 million (CHF 31,000,000) in Christie's Geneva auction. On December 11, 2021, Patek Philippe Nautilus ref. 5711 with Tiffany blue dial sets a new world record for any wristwatch sold online, realizing US$6.5 million in Phillips New York auction. Calatrava wristwatch In 1932, Patek Philippe launched the first Calatrava model Ref. 96, which was designed by English horologist David Penney who was influenced by the Bauhaus art movement in Germany. Originally, the Stern brothers, soon after they acquired Patek Philippe in 1932, introduced the Calatrava to help the company pass through the Great Depression smoothly. The original Calatrava Ref. 96 was in production for more than 40 years, and its successor models include Ref. 2526, Ref. 3520, Ref. 5196 and so