Notes: 18k yellow gold oyster case 36.0 mm in diameter. Rolex logo on a crown. Acrylic crystal with Cyclops magnifier. Champagne dial with raised baton hour markers and luminous filled lance hands. Sweep centre seconds. Outer minute and 1/2 seconds divisions, aperture for day at 12, aperture for date at 3. 18k yellow gold fluted bezel.

Mechanism: First Rolex Day-Date movement. Introduced 1956. The Day-Date ref. 6511 (or “President” as the model came to be popularly known) debuted in 1956 with calibre 1055 beneath the dial. This movement does not have a "quick-set" feature as that was introduced in the 3155 movement in 1988.

Family Notes: The Rolex Day-Date was introduced in 1956. It soon became known as the "Rolex President". It was unofficially renamed after President Eisenhower became associated with this model watch. This association was made as the watch was known to have been worn by LBJ and shared a scandalous connection to JFK. Since then it has earned the vote of a diverse array of potentates, including Warren Buffett, Jay Z, and (fictional character) Tony Soprano. In 1977, Rolex started using the new (at the time) 3055 movement for the Day-Date/President line. As of 2018, the Day-Date 40 uses the 3255 movement.