LOUIS ERARD × KONSTANTIN CHAYKIN Le Régulateur “Dusk to Dawn” Limited Edition | Stainless Steel | Ref. 85237AA89.BGA089 | Full Set

LOUIS ERARD × KONSTANTIN CHAYKIN Le Régulateur “Dusk to Dawn” Limited Edition | Stainless Steel | Ref. 85237AA89.BGA089 | Full Set

This timepiece is unworn, in pristine condition. It comes as a complete set with box and March 2024 papers. Believed to be the only example currently available in the United States. Limited to 178 pieces.

The second Wristmon collaboration between Louis Erard and independent master watchmaker Konstantin Chaykin — holder of 94 patents — the Le Régulateur “Dusk to Dawn” is a 42mm stainless steel timepiece measuring 11.6mm in thickness, limited to just 178 pieces worldwide. The anthracite dial with sunray wave pattern is dominated by Chaykin’s signature grotesque cyclops, inspired by the Slavic legend of the Likho: a revolving eye sub-dial at 12 o’clock indicates the hours, a gaping saw-toothed mouth at 6 o’clock devours the seconds via a spinning star-shaped disc, and a bold red hand-shaped minute hand sweeps the peripheral minute track — a three-register regulator layout unlike anything else in contemporary watchmaking. The caseback is individually engraved “Limited Edition 1 of 178.” Presented on a black toad leather strap with red rabbit leather lining and a stainless steel pin buckle. The Sellita SW266-1 is a self-winding movement with a custom open-worked rotor, beating at 28,800 vph (4 Hz), and delivering approximately 38 hours of power reserve, water-resistant to 50 meters.

Delivery is via fully insured FedEx Priority Overnight to your nearest FedEx Ship Center within the continental U.S. All photos and videos are captured using professional macro equipment to accurately disclose condition; minor blemishes shown, as well as occasional fingerprints visible due to handling during photography, may not be apparent under normal lighting or wear. Each timepiece is represented with honesty, transparency, and quality, and its provenance is fully guaranteed. Seller is not affiliated with, sponsored by, or an authorized dealer of any horology house.

💲6️⃣,8️⃣9️⃣5️⃣ +✈️. Payable via wire or Zelle. Major CC add 3.99%, approval required. Digital-friendly at 1%.

Listing Details:
• Reference Number: 85237AA89.BGA089
• Case Material: Stainless Steel
• Bezel Material: Stainless Steel
• Case Diameter: 42mm
• Case Thickness: 11.6mm
• Crystal: Domed Sapphire, Anti-Reflective Treatment (Both Sides)
• Dial: Anthracite, Sunray Wave Pattern, Chaykin Wristmon “Dusk to Dawn”
• Strap Material: Black Toad Leather, Red Rabbit Leather Lining
• Clasp: Stainless Steel Pin Buckle
• Movement: Sellita SW266-1, Custom Open-Worked Rotor
• Power Reserve: 38h
• Water Resistance: 50m
• Limited Edition: 178 Pieces
• Individually Caseback Engraved

Location: Ridgefield Park, NJ, USA