Rolex. A remarkable and very special Rolex Submariner Big Crown reference 6538 in stainless steel coming from "The Mondani Collection of Rolex wristwatches" auction, 13th May 2006. Model: Submariner Material: stainless steel Reference N°: 6538 Year: 1959 Case N°: 448909 Caliber: 1030 Movement N°: N893388 Bracelet: leather strap Dimensions: 38 mm Literature: This watch is illustrated in “Rolex, Collecting Wristwatches”, Osvaldo Patrizzi, 2001 Edition, p. 295