{"query": "13ZN", "brand": null, "total": 5, "limit": 10, "matches": [{"slug": "longines-13zn-vintage-chronograph-gold", "brand": "Longines", "ref": "13ZN", "model": "Vintage Chronograph 13ZN", "case_material": "18k Yellow Gold", "url": "https://mostexpensivewatches.net/reference/longines-13zn-vintage-chronograph-gold", "description": "The Longines 13ZN chronograph was produced from 1936 until approximately 1947. Collectors prioritize this reference for its 13ZN caliber, which was the first serially produced wristwatch movement to feature a flyback function. In 18k yellow gold, the watch typically features a multi-step bezel or a \"tre tacche\" case construction with a diameter ranging from 34mm to 38mm. Dial configurations often include tachymeter or telemeter scales in enamel or silvered finishes. Due to the movement's technical complexity and the brand's transition to outsourced calibers later in the century, these pieces are considered significant historical artifacts. Current secondary market prices for 18k yellow gold examples generally range from $25,000 to over $100,000 depending on case size and dial originality. A notable 1940s oversized 38mm yellow gold variant reached a hammer price of approximately $120,000 at a major 2022 auction.", "score": 199}, {"slug": "longines-5009", "brand": "Longines", "ref": "5009", "model": "13ZN Flyback Chronograph", "case_material": "Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/longines-5009", "description": "The Longines reference 5009 was produced during the 1940s and is no longer in production. Collectors prioritize this reference for its 37mm stainless steel \"Tre Tacche\" case, characterized by a three-notch screw-down caseback that provided enhanced water resistance for the period. It houses the manual-wind caliber 13ZN, a movement featuring an integrated flyback complication that allows the chronograph to be reset and restarted with a single pusher press. The dial typically features a two-register layout with a peripheral tachymeter or telemeter scale. Due to the combination of the oversized steel case and the technically significant movement, secondary market prices generally range from $40,000 to over $100,000 depending on condition and dial configuration. A notable production detail is the use of stepped bezels on certain 5009 examples, which significantly impacts valuation at international auctions where well-preserved specimens frequently exceed initial estimates.", "score": 72}, {"slug": "longines-5415", "brand": "Longines", "ref": "5415", "model": "13ZN Flyback Chronograph", "case_material": "Stainless Steel", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/longines-5415", "description": "The Longines reference 5415 was produced during the 1940s and is no longer in production. Collectors prioritize this reference for its 37.5mm stainless steel step-bezel case and the inclusion of the caliber 13ZN, a manual-wind movement featuring an integrated flyback complication. The reference is noted for its waterproof-style case construction, often featuring round \"mushroom\" pushers and a screw-down case back. Dials typically feature multi-scale configurations, including tachymeter and telemeter tracks. Due to its rarity and technical significance, secondary market prices generally fall within the $60,000 to $120,000 range, though exceptional examples can exceed these figures. A notable auction result occurred in 2017 when a stainless steel 5415 with a silvered dial sold for approximately $140,000. Production numbers for this specific reference were limited, making well-preserved, unpolished steel examples difficult to source in the current vintage market.", "score": 72}, {"slug": "longines-103", "brand": "Longines", "ref": "103", "model": "13ZN Pink Gold Chronograph", "case_material": "18k Pink Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/longines-103", "description": "The Longines reference 103, featuring the 13ZN caliber, was produced during the late 1930s and 1940s. Collectors prioritize this reference for its 18k pink gold construction and the inclusion of the 13ZN movement, which was the first chronograph caliber to feature a flyback function. The case typically measures 37mm to 38mm, featuring a stepped bezel and heavy lugs. Dial configurations often include multi-scale tachymeter and telemeter tracks in enamel or metallic finishes. Due to the limited production of oversized gold chronographs from this era, the reference 103 is considered rare. On the secondary market, these watches generally command prices in the mid-five-figure to low-six-figure range depending on condition and dial rarity. A notable 2015 auction result for a pink gold 13ZN with a sector dial reached approximately $100,000, illustrating the premium placed on well-preserved examples with original components.", "score": 72}, {"slug": "longines-3474", "brand": "Longines", "ref": "3474", "model": "13ZN Non-Flyback Chronograph", "case_material": "18k Gold", "provenance": "extracted_from_auction_comps", "url": "https://mostexpensivewatches.net/reference/longines-3474", "description": "The Longines reference 3474 was produced during the late 1930s and 1940s, featuring the 13ZN manual-wind movement. While the 13ZN is widely recognized for its flyback complication, the reference 3474 is a rare non-flyback execution of the caliber. Collectors prioritize this reference for its 18k yellow gold stepped case, which typically measures approximately 32.5mm to 33mm, and its multi-scale dials often featuring tachymeter and telemeter tracks. The non-flyback variant is significantly rarer than standard 13ZN models, as the movement was modified to remove the permanent reset function. On the secondary market, these gold chronographs generally command prices between $15,000 and $30,000 depending on dial originality and case sharpness. A notable production detail is that many 3474 examples were delivered to the Italian market through the retailer Oltramare, often featuring distinctive sector or two-tone dial configurations that increase their valuation at auction.", "score": 72}]}