The release in January 2021 of a new reconstruction of the first Grand Seiko from 1960 opens a year of celebration of the company's 140th anniversary. This commemorative timepiece offers an extraordinary blend of leanness, efficiency and precision. The case is only 10.9mm deep, the power reserve is 72 hours, and the accuracy rate is between +5 and -3 seconds per day, all made possible by the hand-wound Caliber 9S64 that powers the 'clock. Masterpiece Collection Kintaro Hattori 160th Anniversary Limited Edition The case and indexes are in 18k gold and the anniversary is marked with the "S" mark engraved on a gold plate set in the bridge of the movement. Kintaro Hattori registered this trademark in 1900 as a symbol of the Seikosha factory.