For many years the IWC Portuguese Tourbillon Mystère has for many years been admired for its rotating carriage escapement. This year IWC has added a retrograde date indicator to their Portuguese Tourbillon Mystere watch. The new Retrograde version is to produced as a limited addition piece in both 18 carat red gold and platinum, with red gold version limited to 500 pieces and the platinum version limited to 250 pieces. The large case size measures 44.2 millimeters in diameter by 15.5 millimeters tall.

Since its debut in 2004, the IWC Portuguese Tourbillon Mystere has been a coveted watch thanks to its beautiful setting of its tourbillon escapement. The new Rétrograde date is a wonderful addition to the watch. The flyback date indicator springs back automatically to “1” at the end of any months with 31 days – January, March, May, July, August, October, December. For the shorter months the date indicator must be advanced by the rapid adjustment function to then fly back to the first day of the month.

The watch features a mechanical IWC-manufactured movement caliber 51900 with Pellaton winding system and seven-day power reserve, retrograde date display, flying minute tourbillon. The red gold version has a silver-plated dial and dark brown alligator leather strap with red gold folding clasp. The platinum version has a ruthenium-black dial and a black alligator leather strap with platinum folding clasp. The dial is protected by a convex sapphire crystal treated with an antireflective coating on both sides. The case-back has a see-through sapphire crystal. The watch boasts a Water resistance of 3 bars. Cost is speculated to be slightly above the $100,000.