Audemars Piguet Royal Oak Selfwinding 41mm Ref. 15500ST.OO.1220ST.04 (Khaki Green)
Luxury Sports Watch · Audemars Piguet (Independent Holy Trinity Member); Upper-tier Haute Horlogerie; known for defining the luxury steel sports watch category.
Period: Modern Luxury (Post-Gérald Genta Design Evolution). The Royal Oak was originally designed in 1972, but this 15500 reference represents the modern iterations launched in 2019, characterized by a cleaner dial and improved movement technicality.
Type
Luxury Sports Watch
Brand
Audemars Piguet (Independent Holy Trinity Member); Upper-tier Haute Horlogerie; known for defining the luxury steel sports watch category.
Movement
Automatic Selfwinding Calibre 4302; 28,800 vph (4Hz) frequency; 70-hour power reserve; 32 jewels; 257 parts.
Dimensions
Case diameter: 41mm; Thickness: 10.4mm; Lug-to-lug: ~50mm (integrated); Lug width: Integrated bracelet system.
Description
This Audemars Piguet Royal Oak reference 15500ST is a masterclass in modern horology. It retains the iconic silhouette designed by Gérald Genta but updates it for the contemporary collector with a bold 41mm presence and the stunning Khaki Green 'Grande Tapisserie' dial. The dial eliminates the 'Automatic' text found on older models and moves the date window further toward the edge for better symmetry. The play of light between the brushed surfaces and the diamond-polished bevels creates a 'glitter' effect unique to the Royal Oak.
Key Features
Octagonal bezel with 8 screws; Khaki Green Grande Tapisserie texture; Absence of the 'AP' logo at 12 (replaced by full text); Calibre 4302 movement with high power reserve; Integrated bracelet architecture.
Dial Description
Khaki Green with 'Grande Tapisserie' pattern; applied white gold baton indices with luminescent coating; Royal Oak hands with luminescent coating; date aperture at 3 o'clock with color-matched date wheel; 'Audemars Piguet' logo printed on smooth plaque (no AP initials).
Case Material
316L Stainless steel with high-end vertical brushed finishing and mirror-polished chamfers/bevels on the lugs and bezel edges.
Crystal Type
Flat glareproofed sapphire crystal on the front; exhibition sapphire crystal on the caseback.
Bezel Details
Fixed octagonal bezel in stainless steel; vertical brushed finish; 8 hexagonal white gold screws aligned within the bezel; polished bezel edge.
Crown & Pushers
Hexagonal screw-down crown with AP branding; no crown guards, integrated into the sharp case geometry.
Bracelet or Strap
Integrated stainless steel bracelet with 'AP' folding clasp; featuring the signature tapering links and alternating brushed/polished finishing.
Caseback Details
Exhibition/display caseback with sapphire window revealing the 22k gold skeletonized oscillating weight and movement decoration; screw-down steel peripheral ring.
Movement Type
Automatic Selfwinding Calibre 4302; 28,800 vph (4Hz) frequency; 70-hour power reserve; 32 jewels; 257 parts.
Water Resistance
50 meters (5 ATM); suitable for light splashes and surface swimming, but not recommended for high-impact water sports or diving.
Origin & Provenance
Swiss Made; manufactured in Le Brassus, Switzerland; featuring a 100% in-house manufacture movement.
Age Estimate
Produced circa 2021-2022. The khaki green dial was a boutique exclusive variation introduced for the 15500ST family during this period.
Cultural Significance
The Royal Oak is widely considered the most important luxury sports watch in history. It challenged the industry in 1972 by being a steel watch that cost more than many gold watches, creating the 'Steel Luxury' market that dominates today.
Condition Notes
The watch appears to be in Excellent condition with sharp factory bevels. Note: The provided image shows Moiré patterns on the dial which are artifacts of the photo/screen interaction rather than dial damage.
Value Estimate
MSRP was approximately $25,000-$28,000; Secondary market value for the Boutique Green dial ranges from $45,000 to $65,000 depending on box, papers, and condition.
Care & Maintenance
Recommended service interval of 5 years; water resistance gaskets should be checked annually; use a soft microfiber cloth for cleaning as the polished bevels are prone to hairline scratches (desk diving marks); keep away from high magnetic fields.
Similar Watches
Patek Philippe Nautilus 5711, Vacheron Constantin Overseas 4500V, Girard-Perregaux Laureato. The 15500 is notably larger and more 'industrial' in its finishing than the Nautilus.
Interesting Facts
The green dial 15500ST was specifically released as a Boutique Edition, making it significantly rarer than the standard blue, black, or silver dial variants. The Royal Oak saved AP from the Quartz Crisis in the 1970s.