Rolex Oyster Perpetual Ads

The aptly-coined "Oyster Perpetual" nomenclature inspired Rolex marketing throughout the 1930s - early 1960s. Undoubtedly many Rolex purchases of yesteryear derive from highly-effective advertisements telling about the impenetrable "Oyster" case and robust, automatic movement. "Oyster Perpetual" is the essence of the brand, which is why it's printed on every Rolex dial.