{"brand": {"name": "Jacob & Co.", "slug": "jacob-and-co", "url": "https://mostexpensivewatches.net/brand/jacob-and-co", "tier": "ultra_modern", "founded": 1986, "country": "USA"}, "lang": "en", "inventory": {"count": 1, "median": 3000.0, "low": 3000.0, "high": 3000.0, "brands": 1, "merchants": 1, "in_stock": 0}, "listings": [{"id": "h_7641602916578", "title": "Jacob & Co. Jacob & Co Five Time Zone Diamond Dial & Bezel", "brand": "Jacob & Co.", "model": "Jacob & Co Five Time Zone Diamond Dial & Bezel", "reference": "01707", "price_usd": 3000.0, "currency": "USD", "condition": "excellent", "box_papers": "full_set", "year": null, "case_material": "Stainless Steel", "case_size_mm": 48.0, "movement": "Automatic", "complications": [], "merchant_slug": "watch-collectors-uk", "merchant_name": "Watch Collectors UK", "image_url": "https://cdn.shopify.com/s/files/1/0628/2218/7234/products/jacob_co_five_time_zone_diamond_dial_bezel_second_hand_watch_collectors_1.jpg?v=1647031850", "detail_url": "https://mostexpensivewatches.net/listing/h_7641602916578", "buy_url": "https://mostexpensivewatches.net/out/h_7641602916578", "alt_buy_urls": [{"partner": "goldsmiths", "name": "Goldsmiths", "region": "UK", "url": "https://mostexpensivewatches.net/out/h_7641602916578/via/goldsmiths"}, {"partner": "selfridges", "name": "Selfridges", "region": "UK", "url": "https://mostexpensivewatches.net/out/h_7641602916578/via/selfridges"}, {"partner": "farfetch", "name": "Farfetch", "region": "Global", "url": "https://mostexpensivewatches.net/out/h_7641602916578/via/farfetch"}], "available": false}], "references": [{"slug": "jacob-co-astronomia-sky", "brand": "Jacob & Co.", "ref": "AS900", "model": "Astronomia Sky", "case_material": "18k Rose Gold", "url": "https://mostexpensivewatches.net/reference/jacob-co-astronomia-sky", "description": "The Jacob & Co. Astronomia Sky AS900 in 18k rose gold was introduced in 2016 as a limited edition of 18 pieces. Collectors prioritize this reference for the JCAM11 caliber, a manual-wind movement featuring a triple-axis gravitational tourbillon, a rotating celestial vault, and a three-dimensional sidereal display. The 47mm case utilizes a sapphire crystal monoblock construction to provide visibility of the four-arm vertical movement, which includes a 288-facet Jacob-cut diamond and a magnesium globe. This reference marked a significant technical evolution for the brand by integrating astronomical complications with the rotating carousel architecture. On the secondary market, this model typically trades in the mid-to-high six-figure range, often between $400,000 and $600,000 depending on condition. A notable production detail is the celestial dial made of grade 5 titanium with 18k gold hand-engraved zodiac signs, which rotates once every sidereal year."}], "reviews": [{"slug": "jacob-co-astronomia-sky", "lang": "en", "title": "Jacob & Co. Astronomia Sky AS900 review", "name": "Jacob & Co. Astronomia Sky AS900", "brand": "Jacob & Co.", "model": "Astronomia Sky", "reference": "AS900", "case_material": "18k Rose Gold", "url": "https://mostexpensivewatches.net/review/jacob-co-astronomia-sky", "reference_url": "https://mostexpensivewatches.net/reference/jacob-co-astronomia-sky", "score": {"overall": 6.5, "liquidity": 4, "scarcity": 7, "recognition": 8, "buying_risk_control": 7}, "verdict": "Jacob & Co. Astronomia Sky AS900 is a serious collector reference because it combines brand recognition, recognizable design language and a case profile in 18k Rose Gold. The strongest examples trade on condition, originality, full set documentation and clean provenance.", "why_collectors_care": "Collectors search for Jacob & Co. AS900 because the reference is easy to identify, hard to replace quickly and widely understood by dealers, auction houses and private clients. That liquidity matters when prices move.", "market_position": "For Jacob & Co., the best market signal is not only asking price. Compare live listings with documented auction results, recent availability and whether the same configuration appears repeatedly or disappears quickly.", "buying_checklist": ["Confirm the exact reference, dial, case material and production-era details.", "Prioritize full set examples with service history and seller reputation.", "Compare the ask against auction comps, not only other listings.", "Check polish, replacement parts and provenance before wiring funds."], "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "auction_comp_count": 0}], "auction_lots": [], "docs": {"search": "https://mostexpensivewatches.net/api/listings/search?brand=Jacob+%26+Co.&limit=12", "references": "https://mostexpensivewatches.net/api/references?brand=Jacob+%26+Co.&limit=12", "reviews": "https://mostexpensivewatches.net/api/reviews?brand=Jacob+%26+Co.&lang=en&limit=12", "auctions": "https://mostexpensivewatches.net/api/auctions?brand=Jacob+%26+Co.&limit=12"}}