{"reference": {"slug": "greubel-forsey-signature", "brand": "Greubel Forsey", "ref": "SIGNATURE", "model": "Signature 1", "case_material": "Platinum", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/greubel-forsey-signature", "description": "The Greubel Forsey Signature 1 in platinum was introduced in 2016 as part of a series designed by watchmaker Didier J.G. Cretin. This reference represents a departure from the brand’s typical multi-axis tourbillons, featuring their first manual-winding time-only movement, the Calibre GFS1. Collectors value this model for its hand-finished architecture, including a large 12.6mm balance wheel and gold chatons, housed in a 41.4mm case. Production was strictly limited to 11 pieces in platinum with a blue dial, alongside 55 total pieces across other metals. On the secondary market, this reference typically commands prices in the mid-to-high six-figure range, often between $150,000 and $220,000 depending on provenance. A notable auction result occurred at Christie’s in 2023, where a platinum example realized approximately $214,000, underscoring its rarity compared to the more common steel and gold variants."}, "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "listings": [], "auction_lots": [{"slug": "greubel-forsey-signature-1-2024", "brand": "Greubel Forsey", "reference": "Signature 1", "model": "Signature 1", "case_material": "Platinum", "hammer_usd": 165100, "year_sold": 2024, "venue": "Phillips New York", "lot_summary": "One of only 11 pieces in platinum with a rose gold dial, this model represents Greubel Forsey's first manually wound, three-hand timepiece without a tourbillon.", "source_url": "https://www.phillips.com/detail/greubel-forsey/NY080124/74", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/greubel-forsey-signature-1-2024"}]}