Rolex Oyster Perpetual Date Champagne dial Zephyr in 18 k yellow gold ref 1510These slightly offbeat Zephyr models were introduced in the mid 1950s, beginning with reference 6582, and were marketedparticularly in the United Statesas the worlds handsomest and highly waterproof watch. The name was primarily used for the American market, giving the model a distinctive position within the broader Rolex Oyster Perpetual family. The most striking feature of reference 1510 is its hand engraved, dappled bezel finish, often referred to