Editorial
Alessia Beretta
Complication Specialist
Alessia writes deep dives on tourbillons, perpetual calendars and minute repeaters. WOSTEP-certified watchmaker trained at École d'Horlogerie de Genève.
Articles by Alessia Beretta (8)
Why Tourbillon Cages Use Odd Numbers: 13, 15, 17 Wheel Teeth
The hunting tooth principle governs tourbillon cage design. Why prime and odd-numbered wheel teeth—13, 15, 17—prevent repetitive wear and ensure accuracy.
May 6, 2026
patek-philippe
Patek Philippe Instantaneous Perpetual Calendar: Cam vs Lever Mechanisms
Why Patek Philippe's early lever-based perpetual calendars require different servicing than cam-successor mechanisms—with documented aging patterns across 30+ years.
May 2, 2026
Minute Repeater Gong Metallurgy: Why Alloy Matters More Than Design
The atomic structure of gong alloys determines minute repeater acoustics more than cathedral geometry or case design. A technical examination of why metallurgy trumps form.
April 28, 2026
Patek Philippe vs Audemars Piguet: Perpetual Calendar Philosophy
How Patek's modular perpetual calendar architecture differs from AP's integrated approach—examining technical tradeoffs in height, serviceability, and shock resistance.
April 28, 2026
patek-philippe
Patek 5236P In-Line Perpetual Calendar: Revolutionary Mechanism
How Patek Philippe's caliber 31-260 PS QL eliminates traditional sub-dials through revolutionary cam architecture, representing the most significant perpetual calendar display innovation since the early 1980s.
April 19, 2026
patek-philippe
Patek Philippe Calatrava: The Definitive Guide to Watchmaking's Most Elegant Collection
Explore the Patek Philippe Calatrava collection—the ultimate expression of minimalist luxury and Swiss watchmaking excellence.
April 17, 2026
patek-philippe
Patek Philippe Complications: The Ultimate Guide to Haute Horlogerie Mastery
Explore Patek Philippe's Complications collection—where centuries of watchmaking expertise meet extraordinary mechanical innovation.
April 17, 2026
patek-philippe
Patek Philippe Grand Complications: The Ultimate Guide to Horological Masterpieces
Discover the Patek Philippe Grand Complications collection—where centuries of watchmaking excellence meet unprecedented mechanical complexity and timeless design.
April 17, 2026