Rolex 1520 Movement

The Rolex 1520 movement—yeah, it's kind of a quiet legend. Released in the mid-60s, it powered countless Oyster models with that rugged, no-fuss precision Rolex is known for. Not chronometer-rated, but honestly, it never needed to brag. At Tropical Watch, we keep an eye out for these workhorse calibers tucked inside vintage cases, because there’s just something about the way they hold time—and history—that never gets old.