3755PR, Perpetual Calendar Tourbillon Skeleton, Platinum 94200 and refined by some of

and refined by some of the most studied eyes in the watch industry

comprises the core of pre-leap year Royal Oak Perpetual Calendar collecting

and that’s not something we’ve really had up until this decade

Its calibre CHR 29-535 PS combined six patented chronograph innovations with a newly engineered rattrapante mechanism that offered smoother engagement and more stable amplitude than earlier generations

3755PR, Perpetual Calendar Tourbillon Skeleton, Platinum 94200 and refined by some ofA 3755PR, the flagship complicated Breguet of the early 2000s featuring a tourbillon, perpetual calendar, retrograde date, and complete skeletonization. Made in very small numbers, the retail price of the 3755PR was $275,000 USD in period. The openworking is expansive, with a well resolved floral motif and sharp bevels. Each example is individually numbered on its guilloch dial. This was the utmost Breguet's watchmaking ability in the early 2000s,