Patek Philippe 5550P-001
Advanced Research Perpetual Calendar
Friday, 9 October 2020
Three hundred pieces. Silicon escapement. Perpetual calendar. The 5550P is one of two Advanced Research references in the collection — and together with the 5650G, they represent something most collectors don't have even one of. Patek's innovation programme is small, deliberate, and irreversible. These won't come back.








