{"id":25491,"date":"2026-09-22T11:45:45","date_gmt":"2026-09-22T11:45:45","guid":{"rendered":"https:\/\/www.lemuseonline.com\/prodotto\/omega-cronografo-ref-ck-2393-2\/"},"modified":"2026-09-22T11:46:02","modified_gmt":"2026-09-22T11:46:02","slug":"omega-cronografo-ref-ck-2393-2","status":"publish","type":"product","link":"https:\/\/www.lemuseonline.com\/en\/prodotto\/omega-cronografo-ref-ck-2393-2\/","title":{"rendered":"Omega Chronograph ref. CK 2393"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"<h2>Technical Details &#038; Model History<\/h2>\n<ul>\n<li><strong>Case<\/strong>: stainless steel, 37.5 mm diameter<\/li>\n<li><strong>Movement<\/strong>: manual-winding Omega caliber 33.3<\/li>\n<li><strong>Dial<\/strong>: extremely rare original black dial with multiple scales<\/li>\n<li><strong>Functions<\/strong>: two-register chronograph<\/li>\n<li><strong>Crystal<\/strong>: domed plexiglass<\/li>\n<li><strong>Strap<\/strong>: brown crocodile leather<\/li>\n<li><strong>Reference<\/strong>: CK 2393<\/li>\n<li><strong>Period of production<\/strong>: 1940s<\/li>\n<li><strong>Special feature<\/strong>: Portuguese import hallmark on one lug<\/li>\n<li><strong>Condition<\/strong>: exceptional, remarkably well-preserved example<\/li>\n<\/ul>\n<h2>Key Features<\/h2>\n<ul>\n<li>Iconic Omega chronograph powered by the <strong>caliber 33.3<\/strong><\/li>\n<li>Extremely rare <strong>black multi-scale dial<\/strong>, among the most fascinating designs of the period<\/li>\n<li>Large stainless steel case for the era (37.5 mm)<\/li>\n<li>Presence of the <strong>Portuguese import hallmark<\/strong>, a historical detail highly appreciated by collectors<\/li>\n<\/ul>\n<h2>Historical Context<\/h2>\n<p>During the 1930s and 1940s, Omega developed some of the finest chronographs in its history, many of them powered by the celebrated <strong>caliber 33.3<\/strong>, one of the most important chronograph movements ever produced by the maison. Reference <strong>CK 2393<\/strong> represents one of the most fascinating expressions of this production, particularly in the rare configuration with black dial featuring multiple chronograph scales. The example presented here, bearing a Portuguese import hallmark and preserved in exceptional condition, is a true collector\u2019s piece for enthusiasts of historic chronographs.<\/p>\n","protected":false},"featured_media":5264,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[15,24],"product_tag":[413],"class_list":["post-25491","product","type-product","status-publish","has-post-thumbnail","product_cat-senza-categoria","product_cat-sold-by-us","product_tag-omega-cronografo-ref-ck-2393","pa_cassa-acciaio","pa_epoca-anni-40","pa_genere-uomo","pa_marchi-omega","pa_movimento-manual-winding","pa_tipologia-wristwatches","first","outofstock","shipping-taxable","product-type-simple"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Omega Chronograph ref. CK 2393<\/title>\n<meta name=\"description\" content=\"Rare Omega chronograph ref. CK 2393 from the 1940s with caliber 33.3, original black multi-scale dial and Portuguese import hallmark.\" \/>\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\/prodotto\/omega-cronografo-ref-ck-2393\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Omega Chronograph ref. CK 2393\" \/>\n<meta property=\"og:description\" content=\"Rare Omega chronograph ref. CK 2393 from the 1940s with caliber 33.3, original black multi-scale dial and Portuguese import hallmark.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.lemuseonline.com\/prodotto\/omega-cronografo-ref-ck-2393\/\" \/>\n<meta property=\"og:site_name\" content=\"Le Muse\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-22T11:46:02+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.lemuseonline.com\/wp-content\/uploads\/2026\/09\/Om33black-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1577\" \/>\n\t<meta property=\"og:image:height\" content=\"2560\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Omega Chronograph ref. CK 2393","description":"Rare Omega chronograph ref. CK 2393 from the 1940s with caliber 33.3, original black multi-scale dial and Portuguese import hallmark.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.lemuseonline.com\/prodotto\/omega-cronografo-ref-ck-2393\/","og_locale":"en_US","og_type":"article","og_title":"Omega Chronograph ref. CK 2393","og_description":"Rare Omega chronograph ref. CK 2393 from the 1940s with caliber 33.3, original black multi-scale dial and Portuguese import hallmark.","og_url":"https:\/\/www.lemuseonline.com\/prodotto\/omega-cronografo-ref-ck-2393\/","og_site_name":"Le Muse","article_modified_time":"2026-09-22T11:46:02+00:00","og_image":[{"width":1577,"height":2560,"url":"https:\/\/www.lemuseonline.com\/wp-content\/uploads\/2026\/09\/Om33black-scaled.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.lemuseonline.com\/prodotto\/omega-cronografo-ref-ck-2393\/","url":"https:\/\/www.lemuseonline.com\/prodotto\/omega-cronografo-ref-ck-2393\/","name":"Omega Chronograph ref. CK 2393","isPartOf":{"@id":"https:\/\/www.lemuseonline.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.lemuseonline.com\/prodotto\/omega-cronografo-ref-ck-2393\/#primaryimage"},"image":{"@id":"https:\/\/www.lemuseonline.com\/prodotto\/omega-cronografo-ref-ck-2393\/#primaryimage"},"thumbnailUrl":"https:\/\/www.lemuseonline.com\/wp-content\/uploads\/2026\/09\/Om33black-scaled.jpg","datePublished":"2026-09-22T11:45:45+00:00","dateModified":"2026-09-22T11:46:02+00:00","description":"Rare Omega chronograph ref. 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