The Swiss mountain guide, chemist and oxygen specialist Jürg Marmet wore this Rolex Ref. 6298 on his successful ascent of the Mount Everest on 23 May 1956. He was only the third human ever to reach the world’s highest peak. Part of the route that the Swiss team chose to climb Everest enabled them to simultaneously conquer the world’s fourth-highest mountain, Lhotse, for the first time.
The engraving on the case back refers to the 1953 expedition to Baffin Island (Canada). Estimate: CHF 20’000-40’000
This is the Number 1 Ref. 5402SA, the stainless steel and gold ‘Jumbo’ Royal Oak made from 1977 to 1985 in a total of 951 examples. Estimate: CHF 200’000-400’000.
This timepiece belongs to the Cartier ‘Paris Crash’ series released in 1991 as a tribute to the model produced by the brand’s London branch in the late 1960s. Jean-Jacques Cartier and the designer Rupert Emmerson were behind the creation of the original Crash. Estimate: CHF 120’000-180’000.
Only three examples of the Rolex Cosmograph Ref. 6263 'Paul Newman Lemon Dial' are known to exist. This is the oldest one, dating back to 1969, meaning that it predated some of the latest examples of the earlier 'pump pusher' Refs 6262 and 6264. Estimate: CHF 3,000,000-5,000,000.
Reference 1518 is the earliest Patek Philippe perpetual calendar chronograph wristwatch serially produced and the first produced by any manufacturer, ever. This one is the only known example double-signed and certified by Cartier. Estimate: CHF 1,500,000-2,500,000.