For watch lovers, one of the most fascinating aspects of the new IWC Portugieser Tourbillon Mystère Rétrograde just unveiled at the Salon International de la Haute Horlogerie SIHH 2015 is the unusual presentation of the flying tourbillon, consisting of 82 parts, as a “12” indicator that appears to come to life. Fitted with a robust 44.2 mm case in platinum, after the 31st day of the month, the retrograde date display automatically jumps back to the 1st; in shorter months, the hand can be directly advanced using a rapid-advance system until it reverts to the 1st. The 7-day power reserve display indicates how much energy remains in the IWC 51900 calibre. To mark the 75th anniversary of the Portugieser watch family, IWC has given a timepiece swathed in mystery an additional touch of luxury.