Audemars Piguet Royal Oak 36mm Tropical Dial Two Tone 4100SA

The Audemars Piguet Royal Oak 4100SA is a two-tone steel and gold automatic watch produced in 1980, with a 36 mm case and the octagonal bezel with exposed screws that identifies the Royal Oak collection. It is a used example in good vintage condition, without its original box or papers, and authentication is pending. The gray dial has developed a tropical-style patina, most visible around the markers, so the watch presents as an aged vintage piece rather than a current-production model.

The integrated gold and steel bracelet connects to the case as a single unit, and the 36 mm diameter places the octagonal bezel and its screws in proportion to the rest of the watch. The sapphire crystal covers the dial while leaving its aged surface visible. The case, bezel, and bracelet show surface scratches and signs of wear consistent with age, and the bracelet remains strong. Because the dial colour has shifted with age, its appearance changes with the light. No original box or papers are included.

Technical Specifications:

• Reference: 4100SA
• Year of Production: 1980
• Case Diameter: 36 mm
• Case and Bracelet Material: Steel and Gold
• Movement: Automatic
• Crystal: Sapphire