{"id":71841,"date":"2026-09-11T16:59:42","date_gmt":"2026-09-11T14:59:42","guid":{"rendered":"https:\/\/ora24.gr\/?post_type=product&#038;p=71841"},"modified":"2026-09-11T16:59:42","modified_gmt":"2026-09-11T14:59:42","slug":"bundeswehr-1550sg-very-rare-vintage-military-nato-43mm-manual-winding-flyback-chronograph-black-dial","status":"publish","type":"product","link":"https:\/\/ora24.gr\/el\/product\/bundeswehr-1550sg-very-rare-vintage-military-nato-43mm-manual-winding-flyback-chronograph-black-dial\/","title":{"rendered":"Bundeswehr 1550SG Very Rare Vintage MILITARY NATO 43mm Manual Winding Flyback Chronograph Black Dial"},"content":{"rendered":"<pre>\u00a0 The <strong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-complete=\"true\" data-processed=\"true\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 700; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">Heuer Bundeswehr Ref. 1550SG<!--TgQPHd|||[]--><\/strong> is a legendary, <strong>very rare and highly collectible<\/strong> Cold War-era <strong>military<\/strong> aviation watch. Originally manufactured by Heuer-Leonidas for West German military pilots for NATO, (the Bundeswehr) during the 1960s and 1970s, it is renowned for its bold presence and exceptional utility.\r\n\r\n\u00a0 The code <strong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-complete=\"true\" data-processed=\"true\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 700; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">6645-12-146-3774<!--TgQPHd|||[]--><\/strong> is a military supply number (NATO Stock Number) engraved on the caseback of the iconic <strong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-complete=\"true\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 500; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">Heuer Bundeswehr\u00a0<\/strong>\r\n\r\n\u00a0 The breakdown of the NATO Stock Number (NSN) signifies its military origin:<!--TgQPHd|||[]--><\/pre>\n<ul class=\"KsbFXc U6u95\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-ved=\"2ahUKEwj8uLXuktKWAxV3QvEDHXaKOJQQ-7AUeggIAggBCBQQAA\" data-hveid=\"CAIIAQgUEAA\" data-complete=\"true\" data-processed=\"true\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 12px 0px 16px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">\n<li class=\"Z1qcYe\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-hveid=\"CAIIAQgUEAE\" data-complete=\"true\" data-sae=\"\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px 0px 12px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">\n<pre><span class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-complete=\"true\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\"><strong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-complete=\"true\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 700; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">6645<!--TgQPHd|||[]--><\/strong>: The NATO supply classification code for \"Time Measuring Instruments.\"<!--TgQPHd|||[]--><\/span><!--TgQPHd|||[]--><\/pre>\n<\/li>\n<li class=\"Z1qcYe\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-hveid=\"CAIIAQgUEAI\" data-complete=\"true\" data-sae=\"\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px 0px 12px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">\n<pre><span class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-complete=\"true\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\"><strong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-complete=\"true\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 700; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">12<!--TgQPHd|||[]--><\/strong>: The country code designating West Germany.<!--TgQPHd|||[]--><\/span><!--TgQPHd|||[]--><\/pre>\n<\/li>\n<li class=\"Z1qcYe\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-hveid=\"CAIIAQgUEAM\" data-complete=\"true\" data-sae=\"\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px 0px 12px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">\n<pre><span class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-complete=\"true\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\"><strong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-complete=\"true\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 700; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">146-3774<!--TgQPHd|||[]--><\/strong>: The unique item identification code for this specific Heuer model.<\/span><\/pre>\n<\/li>\n<\/ul>\n<ul>\n<li class=\"Z1qcYe\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-hveid=\"CAIIAQgYEAE\" data-complete=\"true\" data-sae=\"\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px 0px 12px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">\n<pre><span class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-complete=\"true\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\"><strong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-complete=\"true\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 700; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">Case Size<!--TgQPHd|||[]--><\/strong>: <strong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-complete=\"true\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 700; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">43mm<!--TgQPHd|||[]--><\/strong> diameter (brushed stainless steel with a two-piece front-loading construction).<!--TgQPHd|||[]--><\/span>\u00a0<!--TgQPHd|||[]--><\/pre>\n<\/li>\n<li class=\"Z1qcYe\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-hveid=\"CAIIAQgYEAY\" data-complete=\"true\" data-sae=\"\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px 0px 12px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">\n<pre><span class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-complete=\"true\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\"><strong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-complete=\"true\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 700; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">\u039c\u03b7\u03c7\u03b1\u03bd\u03b9\u03c3\u03bc\u03cc\u03c2<!--TgQPHd|||[]--><\/strong>: <strong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-complete=\"true\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 700; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">Valjoux Caliber 230<!--TgQPHd|||[]--><\/strong> manual-winding column-wheel movement.<!--TgQPHd|||[]--><\/span>\u00a0<!--TgQPHd|||[]--><\/pre>\n<\/li>\n<li class=\"Z1qcYe\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-hveid=\"CAIIAQgYEAs\" data-complete=\"true\" data-sae=\"\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px 0px 12px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">\n<pre><span class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-complete=\"true\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\"><strong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-complete=\"true\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 700; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">Flyback Function<!--TgQPHd|||[]--><\/strong>: Allows the pilot to instantly stop, reset, and restart the chronograph hand with a single press of the lower pusher\u2014crucial for precise, consecutive navigation timings.<!--TgQPHd|||[]--><\/span>\u00a0<!--TgQPHd|||[]--><\/pre>\n<\/li>\n<li class=\"Z1qcYe\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-hveid=\"CAIIAQgYEBA\" data-complete=\"true\" data-sae=\"\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px 0px 12px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">\n<pre><span class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-complete=\"true\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\"><strong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-complete=\"true\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 700; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">Dial Layout<!--TgQPHd|||[]--><\/strong>: Matte black dial featuring stark white Arabic numerals and dual sub-registers (running seconds at 9 o'clock and a 30-minute counter at 3 o'clock).<!--TgQPHd|||[]--><\/span>\u00a0<!--TgQPHd|||[]--><\/pre>\n<\/li>\n<li class=\"Z1qcYe\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-hveid=\"CAIIAQgYEBU\" data-complete=\"true\" data-sae=\"\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px 0px 12px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">\n<pre><span class=\"iNqyIf\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-complete=\"true\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\"><strong class=\"rQesXe MPyX\" data-sfc-cp=\"\" data-sfc-root=\"ep\" data-complete=\"true\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Arial, sans-serif; font-size: 16px; font-weight: 700; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">Bezel<!--TgQPHd|||[]--><\/strong>: Thick, bi-directional rotating black aluminum bezel for tracking elapsed hours\/minutes.<\/span><\/pre>\n<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>\u00a0 The Heuer Bundeswehr Ref. 1550SG is a legendary, very rare and highly collectible Cold War-era military aviation watch. Originally manufactured by Heuer-Leonidas for West German military pilots for NATO, (the Bundeswehr) during the 1960s and 1970s, it is renowned for its bold presence and exceptional utility. \u00a0 The code 6645-12-146-3774 is a military supply [&hellip;]<\/p>\n","protected":false},"featured_media":71842,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_cat":[4571,1158,1185],"product_tag":[1197],"class_list":{"0":"post-71841","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-men","7":"product_cat-our-watches","8":"product_cat-heuer","9":"product_tag-homepage","10":"pa_box-papers-1-year-warranty","11":"pa_bracelet-leather-strap","12":"pa_brand-heuer","13":"pa_case-stainless-steel","14":"pa_condition-excellent","15":"pa_dial-black","16":"pa_diameter-43mm","17":"pa_functions-chronograph","18":"pa_movement-manual-winding","19":"pa_reference-number-1550sg","20":"pa_year-2-1970s","22":"first","23":"instock","24":"shipping-taxable","25":"purchasable","26":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/ora24.gr\/el\/wp-json\/wp\/v2\/product\/71841"}],"collection":[{"href":"https:\/\/ora24.gr\/el\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/ora24.gr\/el\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/ora24.gr\/el\/wp-json\/wp\/v2\/comments?post=71841"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ora24.gr\/el\/wp-json\/wp\/v2\/media\/71842"}],"wp:attachment":[{"href":"https:\/\/ora24.gr\/el\/wp-json\/wp\/v2\/media?parent=71841"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/ora24.gr\/el\/wp-json\/wp\/v2\/product_cat?post=71841"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/ora24.gr\/el\/wp-json\/wp\/v2\/product_tag?post=71841"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}