Reference 3525 Was one of the first Oyster Chronograph references and was available in stainless steel as well as 18K pink and yellow gold. When this watch first appeared in the early 1940s it cost 350 Swiss francs in stainless steel; in 18K gold it cost 935 Swiss francs. This particular example is part of the second series of references 3525, made in 1945 with the serial numbers between the lugs rather than on the caseback. Featuring sharp angles to the case, its original crown and a close to mint salmon dial with a crisp blue color telemeter scale that is often faded, there is no doubt as to why this reference is one of the most appreciated pre-daytona chronographs today. For similar examples please see Cronografi Rolex, La Legenda by Pucci Papaleo p. 162-192.