Patek Philippe Annual Calendar · Reference 5205G
Patek Philippe Annual Calendar 5205G
Known as The 5205G, most often the gradient-blue 5205G-013
The 5205G is Patek Philippe's white gold Annual Calendar with moonphase and 24-hour indication, introduced in 2010 and built around the in-house self-winding caliber 324 S QA LU 24H. It sits in the Complications family, one rung below the perpetual calendars in price and complexity but running the same annual calendar mechanism Patek patented in 1996: it tracks the 30 and 31 day months automatically and needs a single correction each year, at the end of February. The 5205 replaced the earlier 5146 in white gold and gave the annual calendar a more contemporary face, with the day, date, and month laid out in three separate apertures across the top of the dial and a combined moonphase and 24-hour sub-dial at 6 o'clock. Three main dial executions matter to a buyer: the original 5205G-001 with a two-tone rhodium-to-charcoal gradient, the 5205G-010 with a black slate dial, and the 5205G-013 launched in 2020 with the sunburst blue gradient that darkens toward the rim. The blue is the one most people picture when they say 5205G, and it is the version that trades most often on our side of the counter.
Produced: The 5205 line launched in 2010 with the 5205G-001. The black-dial 5205G-010 followed later in the run, and the gradient-blue 5205G-013 arrived in 2020 and became the current white gold reference in the collection. Patek keeps these in the catalog for long stretches rather than doing hard annual turnover, so all three variants circulate in the used and new-old-stock market at once.
Specifications
- Reference
- 5205G (variations 5205G-001, 5205G-010, 5205G-013)
- Case material
- 18k white gold
- Case diameter
- 40mm
- Case thickness
- 11.36mm
- Movement
- Caliber 324 S QA LU 24H/206, self-winding automatic
- Power reserve
- 35 hours minimum to 45 hours maximum
- Frequency
- 28,800 vph (4 Hz)
- Jewels
- 34 jewels
- Parts
- 356 components
- Functions
- Hours, minutes, center seconds, annual calendar with day, date and month in apertures, moonphase, 24-hour indication
- Dial
- 5205G-013 gradient sunburst blue darkening toward the periphery; 5205G-001 two-tone rhodium and charcoal; 5205G-010 black slate
- Crystal
- Sapphire crystal front and display caseback
- Water resistance
- 30 meters (100 feet)
- Strap
- Alligator leather with 18k white gold fold-over clasp
- Rotor
- 21k gold central rotor visible through the sapphire caseback
Market & Value
This is a watch that a collector should buy because they want it on the wrist, not as a flip. As of mid-2026 the gradient-blue 5205G-013 trades around the high 30s, roughly $37,000 to $38,000 on WatchCharts, against a discontinued/reference retail near $45,000 and earlier list prices that ran into the $60,000s when it was a fresh boutique piece. It has softened, down a couple of points over the trailing year, and it carries a higher volatility and depreciation profile than the hyped Patek sport references. For a buyer that is opportunity, not warning: white gold annual calendars are one of the few corners of Patek where you can own a genuine in-house complication with a display caseback for well under half of what the same money buys you in a steel Nautilus. The spread between a clean boutique-fresh example and an honest pre-owned piece is real, so condition, box and papers, and service history move price more here than the reference number alone.
What to Know Before You Buy
The annual calendar is the practical complication in the Patek line: set it once, correct it once a year at the end of February, and otherwise leave it alone. The caliber 324 base is one Patek has run for years across the Nautilus, Calatrava and Aquanaut, so parts and servicing are well understood and there are no orphan-movement surprises. On the 5205 specifically, watch the date pusher and corrector operation and confirm the calendar advances cleanly across a month change before you buy, since a lazy or misaligned aperture wheel is the most common issue on annual calendars. The 30 meters of water resistance means this is a dress and daily piece, not a swimmer. On the secondary market, be precise about which dial you are buying: -001 rhodium two-tone, -010 black, -013 gradient blue are visually distinct and priced differently, and listings sometimes cross-tag them. Full set with Patek papers, and ideally an Extract from the Archives on older examples, is worth paying up for on a watch in this price band.
Patek Philippe Patek Philippe Annual Calendar: The Complication They Invented Encyclopedia
Read the full guide →Buying or selling a Patek Philippe 5205G?
We buy and sell the 5205G at Ultimate Diamond, 19 West 47th Street, and we have written checks on all three dials. Because the white gold annual calendars trade at a real discount to retail, this is a reference where we can be aggressive on the buy and fair on the sell. If you own a 5205G and want to move it, bring it in and we will make you a firm cash offer on the spot; box, papers and service records get you the top of our number. If you are looking to acquire one, tell us the dial you want and we will source a clean example rather than push you whatever is in the case. Call us or bring it by the counter on 47th Street and we will price it in front of you.