The Santos model has remained a stalwart of the Cartier range since its inception in 1904. The watch received a big makeover to mark its centenary and appears to have reached its apotheosis with this remarkable palladium-cased skeleton version in which the numerals form both the dial and the movement bridges to cause a transparent effect that enables the manually-wound mechanism to be seen in all its glory. Twin winding barrels provide a three-day power reserve and enhanced accuracy. Price: £35,000 ($51,330). 
Rotonde de Cartier central chronograph
This capitalises on the perfect roundness of the Rotonde by incorporating a novel execution of the chronograph display – rather than using separate subdials in the traditional manner, the watch has a central chronograph counter with a slim seconds hand that begins to move when activated by the push piece, while the minutes are recorded by a rotating disc beneath the dial. A sapphire ring holds the central counter above the dial, meaning the normal hour and minute hands are never obscured by the chronograph. Price: £21,500 (pink gold); £23,000 (white gold).
