Patek Philippe Annual Calendar Moonphase

The Annual Calendar is a complication invented by Patek Philippe. While it plays second string to the Perpetual Calendar in the minds of most collectors, the reality is that the construction of the calendar mechanism is equally challenging and in some cases requires even more components. The Reference 5035 was Patek's first Annual Calendar model launched in 1996, and set the bar for all that followed — including those from competitors. This particular example, a 5205G, is a successor to the 5035 with a few additional refinements. Coming in at 40mm in diameter, it features a lovely solid 18K white gold case with hollowed lugs; a polished, concave bezel; a signed crown; a sapphire crystal; and a sunburst blue 'sector' dial with day, date, month, and moonphase apertures; applied faceted 'baton' indices; and a matching 'dauphine' handset. Fitted to a signed black alligator leather strap with a signed white gold pin buckle, this piece is powered by Patek Philippe's automatic winding Calibre