Technical Archive

Patek Philippe
Complications 5205G-013— lug 20mm

Patek Philippe Complications 5205G-013: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Annual Calendar 5205 White Gold / Blue

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

Patek Philippe 5205G-013
Lug Width
20 mm

The essential strap measurement.

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Reference

5205G-013

Movement

Patek Philippe caliber 324 S QA LU 24H/206 Hours, Minutes, Seconds, Additional 24 Hour Hand (fixed) | Date, Annual Calendar, Day, Month | Moonphase

The Heritage

The Patek Philippe Complications 5205G-013 is a white gold Annual Calendar watch with a 40.20 mm case diameter and 20 mm lug width. It features the caliber 324 S QA LU 24H/206 movement, which distinguishes months of 30 and 31 days automatically for eleven consecutive months, requiring correction only once yearly in late February. The blue sunburst dial displays a moonphase complication within an arched window and includes hours, minutes, seconds, 24-hour indicator, date, day, month, and lunar phase functions.

FAQ

What is the lug width of the Patek Philippe Complications 5205G-013?

The lug width of the Patek Philippe Complications 5205G-013 is 20 millimetres. This measurement must be strictly observed when selecting any aftermarket strap: straps designed for 18mm or 22mm lugs will not sit properly. The measurement should be taken between the internal spring bar posts that attach the strap to the case.

What is the best strap for the Patek Philippe Complications 5205G-013?

There is no universally 'best' strap, only choices grounded in aesthetic vision. Black alligator remains the historical and conservative choice, guaranteeing visual harmony with white gold without competing with quadrant complexity. Vegetable-tanned calf offers evolving patina over time. Shell cordovan provides dense consistency and deep lustre. Technical rubber straps represent the tool-watch choice. Your decision depends on how you intend to use your Complications.

How do you change the strap on a Patek Philippe Complications 5205G-013?

The strap is attached to the case via two spring bars (lugs). To remove it, use a spring bar tool or equivalent: apply light vertical pressure to the bar to release it, then extract gently. Insert the new spring bars into the replacement strap, then reinserert the bar into the case and verify it is firmly locked. If you are inexperienced, consult a watchmaker: the operation is straightforward but the risk of scratching the case is real.

Which aftermarket straps are compatible with the Patek Philippe Complications 5205G-013?

Any strap with a 20mm lug width is technically compatible with the Complications 5205G-013. On milanostraps.it you will find a selection of artisanal straps handcrafted in alligator leather, vegetable-tanned calf, shell cordovan and technical rubber, all with 20mm lugs. Casati Milano additionally offers a bespoke service by appointment at the Milan atelier, where you can select leather and follow production.

How long does a leather strap last on a Patek Philippe Complications?

Durability depends on material and usage. An alligator or shell cordovan strap, if cared for and dried after humidity exposure, typically lasts 3–5 years of daily wear. Vegetable tanning, being organic, ages more rapidly but produces desirable patina: some enthusiasts consider this evolution part of the strap's beauty. Technical rubber straps offer superior durability (5–7 years) but less aesthetic patina. Casati Milano guarantees 18 months against manufacturing defects; natural wear is expected.

The next step

The right strap isn’t chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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By appointment only · Milan

The atelier's website: casatimilano.com