Rolex Oyster Perpetual Date Black Sigma Dial Ref 1500The Rolex Date reference 1500 is a classic 34mm model that has gained increasing attention from collectors over the past year. Were offering a beautiful example with a matte black Sigma dial in excellent condition, featuring crisp white text and rich, vibrant lume. The term "Sigma" refers to the small Greek sigmas that appear on either side of the "T SWISS T" text on Rolex dials from the early 1970s. These sigmas indicate that the hour markers are