{"reference": {"slug": "longines-27748", "brand": "Longines", "ref": "27748", "model": "Type A-7 Avigation", "case_material": "Chrome Plated", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/longines-27748", "description": "The Longines Type A-7 Avigation reference 27748 was produced during the mid-1930s for the U.S. Army Air Corps. Collectors prioritize this reference for its 51mm chrome-plated base metal case and its unique 41-degree offset dial, designed to allow pilots to read the time without releasing flight controls. The watch contains the caliber 18.72 manual-wind monopusher chronograph movement. Due to the corrosive nature of the chrome plating and the rigors of military use, examples in original, well-preserved condition are rare. On the secondary market, these timepieces typically command prices between $20,000 and $40,000 depending on provenance and dial state. A notable production detail is the \"U.S. Army A.C.\" engraving on the caseback, which distinguishes authentic military issues from civilian counterparts. A high-quality example sold at a 2017 Phillips auction for approximately 32,500 CHF."}, "listing_stats": {"count": 0, "median": 0, "low": 0, "high": 0}, "listings": [], "auction_lots": [{"slug": "longines-27748-2024", "brand": "Longines", "reference": "27748", "model": "Type A-7 Avigation", "case_material": "Chrome Plated", "hammer_usd": 19200, "year_sold": 2024, "venue": "Bonhams New York", "lot_summary": "An oversized asymmetrical monopusher chronograph made for the US Army with an offset dial tilted at 40 degrees for pilot legibility.", "source_url": "https://www.bonhams.com/auctions/29437/lot/21/", "provenance": "ai_generated_grounded", "url": "https://mostexpensivewatches.net/auctions/longines-27748-2024"}]}