{"query": "INVENTION", "brand": null, "total": 3, "limit": 10, "matches": [{"slug": "greubel-forsey-invention", "brand": "Greubel Forsey", "ref": "INVENTION", "model": "Invention Piece 2", "case_material": "Platinum", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/greubel-forsey-invention", "description": "The Greubel Forsey Invention Piece 2 was introduced in 2011 as a limited edition of 22 pieces, with 11 units cased in platinum and 11 in 5N red gold. This reference is no longer in production. Collectors prioritize this model for its unique movement architecture, which features two Quadruple Tourbillon systems coupled by a spherical differential. The caliber consists of 594 components, including four asynchronous tourbillons designed to average out positional errors. The dial lacks a traditional face, instead utilizing a sub-dial at 5 o'clock for hours and minutes, a small seconds disc at 10 o'clock, and a 56-hour power reserve indicator at 11 o'clock. On the secondary market, these timepieces typically command prices in the mid-to-high six-figure range, often between $450,000 and $650,000. A notable auction result occurred in 2021 when a platinum example sold for approximately $500,000 at Christie’s.", "score": 204}, {"slug": "greubel-forsey-gf02n", "brand": "Greubel Forsey", "ref": "GF02N", "model": "Invention Piece 1", "case_material": "18k White Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/greubel-forsey-gf02n", "description": "The Greubel Forsey Invention Piece 1 (GF02N) in 18k white gold was introduced in 2007 as a limited edition of 11 pieces, marking the first entry in a series dedicated to the brand’s fundamental technical breakthroughs. This reference showcases the Double Tourbillon 30° movement, featuring an inner cage inclined at 30 degrees rotating every minute inside a four-minute outer cage. The dial architecture omits traditional hands, utilizing two concentric rotating disks for hours and minutes positioned over a large frosted bridge. Collectors value this reference for its historical significance as the inaugural Invention Piece and its extreme rarity, with only 33 total units produced across three metals. On the secondary market, these timepieces typically command prices in the mid-to-high six-figure range. A notable auction result occurred in 2021 when a white gold example sold for approximately $450,000.", "score": 77}, {"slug": "greubel-forsey-ip1", "brand": "Greubel Forsey", "ref": "IP1", "model": "Invention Piece 1", "case_material": "18k Pink Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/greubel-forsey-ip1", "description": "The Greubel Forsey Invention Piece 1 (IP1) was introduced in 2007 as a limited edition of 33 pieces, with 11 units produced in 18k pink gold. This reference commemorates the Double Tourbillon 30°, the brand’s first fundamental invention. The caliber features two tourbillon cages, one rotating every sixty seconds at a 30-degree angle inside a second cage rotating every four minutes. The dial layout omits traditional hands, utilizing two concentric rotating disks for hours and minutes positioned over a large frosted bridge. Collectors value the IP1 for its historical significance as the first entry in the Invention Piece series and its architectural movement finishing. On the secondary market, this reference typically trades in the mid-to-high six-figure range. A notable auction result occurred in 2021 when a pink gold example sold for approximately $475,000, reflecting its rarity compared to the platinum and white gold variants.", "score": 77}]}