The Daytona, which premiered in the early 1960’s, is one of Rolex’s most popular sport models. The first model numbers of 6239 had an external tachymeter scale on the bezel, rather than having its tachymeter printed on the dial, as was typical of “Pre-Daytonas.”the new stainless steel Rolex Cosmograph Daytona 40 MM 116520 copy watches. […]