{"id":19012,"date":"2025-11-28T14:13:23","date_gmt":"2025-11-28T13:13:23","guid":{"rendered":"https:\/\/www.lemuseonline.com\/watches-for-sale\/zenith-el-primero-ref-a3817\/"},"modified":"2025-11-28T14:15:30","modified_gmt":"2025-11-28T13:15:30","slug":"zenith-el-primero-ref-a3817","status":"publish","type":"product","link":"https:\/\/www.lemuseonline.com\/en\/watches-for-sale\/zenith-el-primero-ref-a3817\/","title":{"rendered":"Zenith El Primero ref. A3817"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"<h2>Technical Details &amp; Model History<\/h2>\n<ul>\n<li><strong>Case<\/strong>: stainless steel, 37 mm diameter<\/li>\n<li><strong>Movement<\/strong>: automatic Zenith <strong>El Primero<\/strong> caliber 3019PHC, one of the first automatic chronograph movements in history<\/li>\n<li><strong>Dial<\/strong>: original aged dial with the classic tricolour configuration typical of the A3817 reference<\/li>\n<li><strong>Inner Bezel<\/strong>: tachymeter scale<\/li>\n<li><strong>Crystal<\/strong>: plexiglass<\/li>\n<li><strong>Strap<\/strong>: high-quality black leather<\/li>\n<li><strong>Reference<\/strong>: A3817<\/li>\n<li><strong>Year of production<\/strong>: early 1970s<\/li>\n<li><strong>Condition<\/strong>: excellent, completely original and well preserved<\/li>\n<\/ul>\n<h2>Key Features<\/h2>\n<ul>\n<li>Rare version of the El Primero family featuring the tricolour dial<\/li>\n<li>37 mm tonneau-shaped case with sporty lines typical of Zenith\u2019s 1970s design language<\/li>\n<li>El Primero 3019PHC movement, one of the most iconic automatic chronographs ever made<\/li>\n<li>Original dial with beautiful, even patina\u2014highly desirable among collectors<\/li>\n<\/ul>\n<h2>Historical Context<\/h2>\n<p>The <strong>A3817<\/strong> is one of the most sought-after references from the first generation of the legendary <strong>El Primero<\/strong> movement, introduced in 1969 and still considered one of the greatest automatic chronographs ever produced. Its tricolour dial configuration and sporty case set it apart from other variants. This example, in excellent condition with a naturally aged original dial, represents one of the most appealing and collectible combinations for Zenith enthusiasts.<\/p>\n","protected":false},"featured_media":18998,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[789],"product_tag":[1606],"class_list":{"0":"post-19012","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-sold-by-us","7":"product_tag-zenith-el-primero-ref-a3817","8":"pa_marchi-zenith-en","9":"pa_movimento-automatic","11":"first","12":"outofstock","13":"shipping-taxable","14":"product-type-simple"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Zenith El Primero ref. A3817 - Le Muse s.r.l. Orologi<\/title>\n<meta name=\"description\" content=\"Zenith El Primero A3817 from the early 1970s with 37 mm steel case, tricolour dial and caliber 3019PHC. A rare first-generation El Primero in excellent original condition.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.lemuseonline.com\/en\/watches-for-sale\/zenith-el-primero-ref-a3817\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Zenith El Primero ref. A3817 - Le Muse s.r.l. Orologi\" \/>\n<meta property=\"og:description\" content=\"Zenith El Primero A3817 from the early 1970s with 37 mm steel case, tricolour dial and caliber 3019PHC. A rare first-generation El Primero in excellent original condition.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.lemuseonline.com\/en\/watches-for-sale\/zenith-el-primero-ref-a3817\/\" \/>\n<meta property=\"og:site_name\" content=\"Le Muse s.r.l. Orologi\" \/>\n<meta property=\"article:modified_time\" content=\"2025-11-28T13:15:30+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.lemuseonline.com\/wp-content\/uploads\/2025\/11\/Zen3817Best.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1736\" \/>\n\t<meta property=\"og:image:height\" content=\"2361\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Zenith El Primero ref. A3817 - Le Muse s.r.l. 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Orologi","article_modified_time":"2025-11-28T13:15:30+00:00","og_image":[{"width":1736,"height":2361,"url":"https:\/\/www.lemuseonline.com\/wp-content\/uploads\/2025\/11\/Zen3817Best.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.lemuseonline.com\/en\/watches-for-sale\/zenith-el-primero-ref-a3817\/","url":"https:\/\/www.lemuseonline.com\/en\/watches-for-sale\/zenith-el-primero-ref-a3817\/","name":"Zenith El Primero ref. A3817 - Le Muse s.r.l. 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