 Presidents Eisenhower and Ronald Reagan both wore the Rolex Datejust while in office.Eisenhower's Datejust had a white Roman numeral dial, a stainless steel engine turned bezel and a steel jubilee bracelet and steel case.British Prime Minister Winston Churchill was awarded the 100,000th officially certified chronometer by Rolex's founder, Hans Wilsdorf, while in office during World War II - a 36mm Datejust with a fluted white gold bezel and stainless-steel Jubilee bracelet .