{"query": "S37", "brand": null, "total": 1, "limit": 10, "matches": [{"slug": "roger-dubuis-s37", "brand": "Roger Dubuis", "ref": "S37", "model": "Sympathie Bi-retrograde Perpetual Calendar", "case_material": "18k White Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/roger-dubuis-s37", "description": "The Roger Dubuis Sympathie Bi-retrograde Perpetual Calendar S37 in 18k white gold was produced during the late 1990s and early 2000s, an era defined by the founder’s direct involvement. Collectors prioritize this reference for its caliber RD5707, which carries the Geneva Seal and is based on a Longines L990 base with a complication module by Agenhor. The 37mm case features the original Sympathie design with complex faceted lugs and a shaped sapphire crystal that follows the unconventional geometry of the bezel. The dial displays a bi-retrograde layout for the day and date, alongside a moon phase and leap year indicator. Production was limited, often to 28 pieces per metal variant. On the secondary market, these watches typically trade between $40,000 and $65,000. A notable auction result occurred at Phillips in 2022, where a white gold example reached approximately $60,000.", "score": 198}]}