{"product_id":"montre-piaget-vintage-protocole-91542-cadran-bleu-constelle-1970s","title":"Vintage Piaget Protocole Watch 91542 — Blue Starry Dial (1970s) ","description":"\u003ch2\u003eA midnight blue dial strewn like a constellation across four and a half millimetres of gold\u003c\/h2\u003e\n\u003cp\u003eThis Piaget Protocole watch, reference 91542, produced in the 1970s, is distinguished first and foremost by its dial. Against a \u003cstrong\u003emidnight blue sunburst satin-finished\u003c\/strong\u003e background, a constellation of \u003cstrong\u003elight points\u003c\/strong\u003e is spread across the entire surface, denser in the upper half. This appearance results from the ageing of the lacquer over the past fifty years: it was not intended at the time of manufacture, and no two examples display it in exactly the same way. The effect evokes a starry sky, and that is what gives this piece its character.\u003c\/p\u003e\n\u003cp\u003eThe dial bears neither markers nor numerals. Only the \u003cem\u003ePIAGET\u003c\/em\u003e signature below twelve, the word \u003cem\u003eSWISS\u003c\/em\u003e at the bottom, and the gold dauphine hands. The time is read solely by the position of the hands on an entirely bare surface — an aesthetic choice few houses embrace, and which here leaves all the space to the blue and its light points.\u003c\/p\u003e\n\u003cp\u003eThe case is rectangular, 25mm, in \u003cstrong\u003e18-carat yellow gold\u003c\/strong\u003e, with all four corners cut on a bevel. Its total thickness is \u003cstrong\u003e4.5mm\u003c\/strong\u003e, including the case. This slimness is due to the \u003cstrong\u003e9P2\u003c\/strong\u003e calibre, which measures 2.15 millimetres and comprises 86 components: it is the evolution of the 9P launched in 1957, presented upon its release as the thinnest hand-wound mechanical movement in the world. It is this movement that made Piaget the benchmark for ultra-thin watchmaking.\u003c\/p\u003e\n\u003cp\u003eThe crown is set with a dark stone cabochon, a design detail Piaget applied to its dress lines. The Buckle pin buckle is in 18-carat yellow gold and signed Piaget — an element these watches often lose over the course of strap changes, and one that is difficult to replace.\u003c\/p\u003e\n\u003ch3\u003eThree points to note\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstellated midnight blue dial\u003c\/strong\u003e — a light speckling born from the ageing of the lacquer, which gives this piece an appearance no other example can reproduce.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4.5mm total thickness\u003c\/strong\u003e — including the solid gold case, a profile that current production practically no longer achieves in a mechanical watch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuckle in 18k gold signed Piaget\u003c\/strong\u003e — often lost over the course of strap changes, it is present here and original.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy choose a vintage Piaget watch?\u003c\/h3\u003e\n\u003cp\u003eAcquiring a \u003cstrong\u003epre-owned Piaget watch\u003c\/strong\u003e rather than buying from a boutique offers access to a Swiss high-watchmaking manufacture at a budget incomparable to new, in a \u003cstrong\u003esolid gold\u003c\/strong\u003e piece whose metal moreover retains its own intrinsic value. Piaget is one of the rare houses to conceive, develop, and produce its own movements.\u003c\/p\u003e\n\u003cp\u003eThis reference occupies a precise place among \u003cstrong\u003emen's and women's vintage watches\u003c\/strong\u003e: its 25mm format and extreme slimness make it a \u003cstrong\u003evintage dress watch\u003c\/strong\u003e that can be worn equally by both, within a strictly formal register. It is the type kind of piece that slips beneath a cuff without ever making itself known to the wearer.\u003c\/p\u003e\n\u003cp\u003eLike all our \u003cstrong\u003epre-owned luxury watches\u003c\/strong\u003e, this one has been opened and checked by our watchmakers: verification of the calibre and its consistency with the reference, checking of the serial number, examination of the dial, hands, and case. Every \u003cstrong\u003evintage gold watch\u003c\/strong\u003e  that we offer comes with an invoice Atelier Victor serving as a certificate, a one-year guarantee, and lifetime guaranteed authenticity.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e→ \u003ca href=\"\/en\/collections\/montres-piaget-vintage\"\u003eDiscover all our vintage Piaget watches\u003c\/a\u003e\u003cbr\u003e→ \u003ca href=\"\/en\/collections\/montres-vintage-2000e\"\u003eView our watches from €2,000\u003c\/a\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Piaget\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Protocole\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReference:\u003c\/strong\u003e 91542\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerial number:\u003c\/strong\u003e 3477••\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEstimated year:\u003c\/strong\u003e 1970s\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Switzerland\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGender:\u003c\/strong\u003e Men's and women's watch (Unisex)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMovement:\u003c\/strong\u003e Hand-wound mechanical, Piaget calibre 9P2 (2.15mm thick)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunctions:\u003c\/strong\u003e Hours, minutes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase:\u003c\/strong\u003e 18-carat yellow gold, rectangular shape with cut corners\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 25mm (27.5mm with crown)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLug to lug:\u003c\/strong\u003e 27.5mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness:\u003c\/strong\u003e 4.5mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLug width:\u003c\/strong\u003e 17mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrown:\u003c\/strong\u003e Gold, dark stone cabochon, original\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDial:\u003c\/strong\u003e Midnight blue with sunburst satin finish, dotted with light specks, without hour markers, original\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHands:\u003c\/strong\u003e Gold, dauphine shape, original\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrystal:\u003c\/strong\u003e Mineral, original (condition 8\/10)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrap:\u003c\/strong\u003e Black crocodile-style leather, non-original\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuckle:\u003c\/strong\u003e 18-carat yellow gold pin buckle, signed Piaget, original\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCondition and guarantee\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall condition:\u003c\/strong\u003e The dial is original and has never been restored. Its blue lacquer has evolved over time and shows light speckling spread across the entire surface, denser in the upper half and on the right side, fully visible in our photographs. The sunburst satin finish remains visible, and the dauphine hands and signature are intact. The 18-carat gold case shows noticeable wear scratches on the bezel and sides, gold being a soft metal. The Crystal is in good condition (8\/10).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater resistance:\u003c\/strong\u003e Not guaranteed (vintage watch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuthenticity:\u003c\/strong\u003e Lifetime guarantee\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical:\u003c\/strong\u003e Serviced movement, guaranteed for 1 year\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e Invoice Atelier Victor, protective case\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot included:\u003c\/strong\u003e Original box and papers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhere does the dial's starry appearance come from?\u003c\/strong\u003e\u003cbr\u003eFrom the aging of the lacquer. On lacquered dials from the 1970s, the varnish layer lifts in places over the decades and reveals light specks. This was not intended at the time of manufacture: it is the result of time, and each dial evolves differently, so no two examples are identical. Against this midnight blue background, the effect evokes a starry sky. We point this out plainly rather than presenting it as an original finish: the dial is authentic and has never been restored, and the price of the piece reflects this.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the 9P2 calibre?\u003c\/strong\u003e \u003cbr\u003eIt is a hand-wound mechanical movement 2.15 millimeters thick, comprising 86 components. It derives from the 9P launched by Piaget in 1957, which measured 2mm and was presented as the thinnest hand-wound mechanical movement in the world. The 9P2 gains one and a half tenths of a millimeter for greater robustness and introduces a micrometric screw for rate adjustment. It is this caliber that established Piaget as a reference in ultra-thin watchmaking.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the Protocole line?\u003c\/strong\u003e\u003cbr\u003eProtocole refers to one of Piaget's dress lines, characterized by a rectangular case with cut corners in precious metal and by the maison's ultra-thin calibers. These watches were produced over several decades, with highly varied dials — hard stones, guilloché gold, colored lacquer — on the same case architecture.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow should an 18-carat gold case be cared for?\u003c\/strong\u003e\u003cbr\u003e18-carat gold is a soft metal that scratches easily, which explains the marks borne by this case after fifty years. A soft, dry cloth is sufficient for routine care. Polishing is possible with a watchmaker, but it removes material and gradually softens the sharp edges of the cut corners, which define the design of this reference. We have left the piece in its current condition.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this piece suitable for a slim or larger wrist?\u003c\/strong\u003e\u003cbr\u003eAt 25mm wide, 27.5mm Lug-to-lug and 4.5mm thick, it suits wrists of approximately 15 to 18cm. Its compact format and exceptional thinness place it firmly in the dress category, and it may be worn equally by a man or a woman. The Lug width measures 17mm, making it easy to change the strap.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e ","brand":"Piaget","offers":[{"title":"Default Title","offer_id":54581119811921,"sku":"91542 347765","price":6037.5,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0703\/8576\/2597\/files\/montre-piaget-vintage-protocole-91542-cadran-bleu-constelle-1970s-atelier-victor-1.jpg?v=1787525393","url":"https:\/\/ateliervictor.co\/en\/products\/piaget-protocole-watch-vintage-91542-blue-stella-dial-1970s","provider":"Atelier Victor","version":"1.0","type":"link"}