{"query": "233", "brand": null, "total": 2, "limit": 10, "matches": [{"slug": "jaeger-lecoultre-233", "brand": "Jaeger-LeCoultre", "ref": "233", "model": "Reverso Gyrotourbillon 2", "case_material": "Platinum", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/jaeger-lecoultre-233", "description": "The Jaeger-LeCoultre Reverso Gyrotourbillon 2, reference 233.64.20, was released in 2008 as a limited edition of 75 pieces in platinum. Collectors prioritize this reference for the Calibre 174, which features a spherical biaxial tourbillon rotating at high speeds—the inner carriage every 18.75 seconds and the outer every 60 seconds. It is notable for incorporating a cylindrical balance spring, a feature historically reserved for marine chronometers to improve isochronism. The reversible platinum case is significantly thicker than standard Reversos to accommodate the three-dimensional movement, and the dial is skeletonized with blued steel hands and a 50-hour power reserve indicator on the reverse. On the secondary market, this reference typically commands prices in the mid-to-high six-figure range, often between $200,000 and $350,000 depending on condition. A notable production detail is that this was the first time the Gyrotourbillon complication was integrated into the rectangular Reverso case.", "score": 198}, {"slug": "omega-87233956", "brand": "Omega", "ref": "87233956", "model": "Seamaster 300 Prototype", "case_material": "Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/omega-87233956", "description": "The Omega Seamaster 300 Prototype 87233956 is an experimental stainless steel diver produced in the late 1960s, specifically around 1968. Collectors prioritize this reference due to its unique case construction, which features a massive, asymmetrical \"bullhead\" or \"helmet\" design intended to test ergonomic crown placements and enhanced water resistance. It houses the manual-wind Calibre 861 movement, the same caliber utilized in the Speedmaster Professional of that era. The dial typically features a matte black finish with oversized luminous markers and a distinctive orange central chronograph hand. Because these were internal prototypes and never reached mass production, they are exceptionally rare, with only a few known examples in private hands. On the secondary market, these prototypes occupy a high-value bracket, typically transacting in the mid-to-high five-figure range. A notable example sold at a 2018 Phillips auction for approximately 50,000 CHF.", "score": 83}]}