Rolex Day-Date 18078 Green Khanjar Champagne Dial Bark Finish in 18k Yellow GoldThe Rolex Day Date, introduced in 1956, marked a significant milestone in watchmaking as the worlds first wristwatch to display both the date and the day of the week fully spelled out on the dial. Positioned at the very top of the Rolex catalogue, the Day Date has exclusively been produced in precious metals including 18k yellow, white, or Everose gold, as well as platinum reinforcing its status as the brands ultimate flagship model. The model became