INFORMATIONAL BROCHRE OF 1999 ON THE ROLEX COSMOGH DAYTONA REF. 16520 WHERE THERE IS A BRIEF EXPLANATION OF THE ROLEX OYSTER COSMOGRAPH PERPENTUAL, WITH ITS DIFFERENT MODELS AND AN EXPLANATION OF THE MULTIPLE FUNCTIONALITIS OF THE WATCH AS FOR EXAMPLE ITS SCREWED PUSH-BUTTONS. Informative brochure of the year 1999 on the Rolex Cosmography Daytona ref. 16520 where there is a brief explanation of the Rolex Oyster Cosmography perpetual, with its different models and an explanation of the multiple functionalities of the clock such as its thread buttons. Episteme Vintage Collectors has years of experience in the sale of watches and collection items. Our commercial headquarters in Barcelona offers all the guarantee, seriousness and security that it seeks to acquire a collection article. Our team.