{"product_id":"omega-speedmaster-professional-moonwatch-hesalite-sandwich-ref-3572-51","title":"Omega Speedmaster Professional “Moonwatch” | \"Hesalite Sandwich\" | Ref. 3572.50","description":"\u003cp data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"paragraph\" data-prosemirror-node-block=\"true\" data-pm-slice=\"0 0 []\"\u003eThe Omega Speedmaster Professional Ref. 3572.50 is one of the most interesting variations of the classic Moonwatch, often referred to by collectors as the “Hesalite Sandwich.” It combines the traditional Hesalite crystal on the front with a sapphire exhibition caseback, preserving the vintage appearance of the classic Speedmaster while allowing the movement to be viewed from the rear. The watch retains the familiar 42mm stainless-steel case, black dial, three-register chronograph layout, and black tachymeter bezel associated with the Speedmaster Professional.\u003c\/p\u003e\u003cp data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"paragraph\" data-prosemirror-node-block=\"true\"\u003eDepending on its exact production point, the Ref. 3572.50 can be found with either the decorated Calibre 863 or the later rhodium-finished Calibre 1863. The Calibre 1863 is a manual-winding chronograph movement derived from the historic 861 architecture and was specifically finished for display through the sapphire caseback. This combination of Hesalite front crystal and exhibition back makes the 3572.50 particularly appealing to collectors who want the traditional Moonwatch experience while still being able to enjoy the movement.\u003c\/p\u003e\u003ch2 data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"heading\" data-prosemirror-node-block=\"true\"\u003e\u003cstrong data-prosemirror-content-type=\"mark\" data-prosemirror-mark-name=\"strong\"\u003eCondition\u003c\/strong\u003e\u003c\/h2\u003e\u003cp data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"paragraph\" data-prosemirror-node-block=\"true\"\u003ePlease review the photos carefully for an accurate representation. Light scratches, bracelet wear, bezel wear, Hesalite crystal wear, or other signs of use consistent with age may be present and do not affect functionality.\u003c\/p\u003e\u003cp data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"paragraph\" data-prosemirror-node-block=\"true\"\u003eBased on the approximately 48.3-million serial range, we estimate this watch to date from the late 1990s (1997) This dating is an approximation only\u003c\/p\u003e\u003ch2 data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"heading\" data-prosemirror-node-block=\"true\"\u003e\u003cstrong data-prosemirror-content-type=\"mark\" data-prosemirror-mark-name=\"strong\"\u003eTechnical Data\u003c\/strong\u003e\u003c\/h2\u003e\u003cul class=\"ak-ul\" data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"bulletList\" data-prosemirror-node-block=\"true\"\u003e\n\u003cli data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"listItem\" data-prosemirror-node-block=\"true\"\u003e\u003cp data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"paragraph\" data-prosemirror-node-block=\"true\"\u003e\u003cstrong data-prosemirror-content-type=\"mark\" data-prosemirror-mark-name=\"strong\"\u003eReference:\u003c\/strong\u003e 3572.50 \/ 3572.50.00\u003c\/p\u003e\u003c\/li\u003e\n\u003cli data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"listItem\" data-prosemirror-node-block=\"true\"\u003e\u003cp data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"paragraph\" data-prosemirror-node-block=\"true\"\u003e\u003cstrong data-prosemirror-content-type=\"mark\" data-prosemirror-mark-name=\"strong\"\u003eModel:\u003c\/strong\u003e Omega Speedmaster Professional Moonwatch\u003c\/p\u003e\u003c\/li\u003e\n\u003cli data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"listItem\" data-prosemirror-node-block=\"true\"\u003e\u003cp data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"paragraph\" data-prosemirror-node-block=\"true\"\u003e\u003cstrong data-prosemirror-content-type=\"mark\" data-prosemirror-mark-name=\"strong\"\u003eNickname:\u003c\/strong\u003e “Hesalite Sandwich” – Collector\/Market Nickname\u003c\/p\u003e\u003c\/li\u003e\n\u003cli data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"listItem\" data-prosemirror-node-block=\"true\"\u003e\u003cp data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"paragraph\" data-prosemirror-node-block=\"true\"\u003e\u003cstrong data-prosemirror-content-type=\"mark\" data-prosemirror-mark-name=\"strong\"\u003eSerial:\u003c\/strong\u003e Approximately 48.3M Range\u003c\/p\u003e\u003c\/li\u003e\n\u003cli data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"listItem\" data-prosemirror-node-block=\"true\"\u003e\u003cp data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"paragraph\" data-prosemirror-node-block=\"true\"\u003e\u003cstrong data-prosemirror-content-type=\"mark\" data-prosemirror-mark-name=\"strong\"\u003eCase Diameter:\u003c\/strong\u003e 42mm\u003c\/p\u003e\u003c\/li\u003e\n\u003cli data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"listItem\" data-prosemirror-node-block=\"true\"\u003e\u003cp data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"paragraph\" data-prosemirror-node-block=\"true\"\u003e\u003cstrong data-prosemirror-content-type=\"mark\" data-prosemirror-mark-name=\"strong\"\u003eCase Material:\u003c\/strong\u003e Stainless Steel\u003c\/p\u003e\u003c\/li\u003e\n\u003cli data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"listItem\" data-prosemirror-node-block=\"true\"\u003e\u003cp data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"paragraph\" data-prosemirror-node-block=\"true\"\u003e\u003cstrong data-prosemirror-content-type=\"mark\" data-prosemirror-mark-name=\"strong\"\u003eBezel:\u003c\/strong\u003e Black Tachymeter Bezel\u003c\/p\u003e\u003c\/li\u003e\n\u003cli data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"listItem\" data-prosemirror-node-block=\"true\"\u003e\u003cp data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"paragraph\" data-prosemirror-node-block=\"true\"\u003e\u003cstrong data-prosemirror-content-type=\"mark\" data-prosemirror-mark-name=\"strong\"\u003eDial:\u003c\/strong\u003e Black Speedmaster Professional Dial\u003c\/p\u003e\u003c\/li\u003e\n\u003cli data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"listItem\" data-prosemirror-node-block=\"true\"\u003e\u003cp data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"paragraph\" data-prosemirror-node-block=\"true\"\u003e\u003cstrong data-prosemirror-content-type=\"mark\" data-prosemirror-mark-name=\"strong\"\u003eCrystal:\u003c\/strong\u003e Hesalite Front Crystal\u003c\/p\u003e\u003c\/li\u003e\n\u003cli data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"listItem\" data-prosemirror-node-block=\"true\"\u003e\u003cp data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"paragraph\" data-prosemirror-node-block=\"true\"\u003e\u003cstrong data-prosemirror-content-type=\"mark\" data-prosemirror-mark-name=\"strong\"\u003eCaseback:\u003c\/strong\u003e Sapphire Exhibition Caseback\u003c\/p\u003e\u003c\/li\u003e\n\u003cli data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"listItem\" data-prosemirror-node-block=\"true\"\u003e\u003cp data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"paragraph\" data-prosemirror-node-block=\"true\"\u003e\u003cstrong data-prosemirror-content-type=\"mark\" data-prosemirror-mark-name=\"strong\"\u003eMovement:\u003c\/strong\u003e Omega Calibre 1863\u003c\/p\u003e\u003c\/li\u003e\n\u003cli data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"listItem\" data-prosemirror-node-block=\"true\"\u003e\u003cp data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"paragraph\" data-prosemirror-node-block=\"true\"\u003e\u003cstrong data-prosemirror-content-type=\"mark\" data-prosemirror-mark-name=\"strong\"\u003eMovement Type:\u003c\/strong\u003e Manual-Winding Chronograph\u003c\/p\u003e\u003c\/li\u003e\n\u003cli data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"listItem\" data-prosemirror-node-block=\"true\"\u003e\u003cp data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"paragraph\" data-prosemirror-node-block=\"true\"\u003e\u003cstrong data-prosemirror-content-type=\"mark\" data-prosemirror-mark-name=\"strong\"\u003eJewels:\u003c\/strong\u003e 18 for Calibre 1863\u003c\/p\u003e\u003c\/li\u003e\n\u003cli data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"listItem\" data-prosemirror-node-block=\"true\"\u003e\u003cp data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"paragraph\" data-prosemirror-node-block=\"true\"\u003e\u003cstrong data-prosemirror-content-type=\"mark\" data-prosemirror-mark-name=\"strong\"\u003eFrequency:\u003c\/strong\u003e 21,600 vph \/ 3 Hz\u003c\/p\u003e\u003c\/li\u003e\n\u003cli data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"listItem\" data-prosemirror-node-block=\"true\"\u003e\u003cp data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"paragraph\" data-prosemirror-node-block=\"true\"\u003e\u003cstrong data-prosemirror-content-type=\"mark\" data-prosemirror-mark-name=\"strong\"\u003ePower Reserve:\u003c\/strong\u003e Approximately 48 Hours\u003c\/p\u003e\u003c\/li\u003e\n\u003cli data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"listItem\" data-prosemirror-node-block=\"true\"\u003e\u003cp data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"paragraph\" data-prosemirror-node-block=\"true\"\u003e\u003cstrong data-prosemirror-content-type=\"mark\" data-prosemirror-mark-name=\"strong\"\u003eBracelet:\u003c\/strong\u003e Stainless-Steel Omega Bracelet\u003c\/p\u003e\u003c\/li\u003e\n\u003cli data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"listItem\" data-prosemirror-node-block=\"true\"\u003e\u003cp data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"paragraph\" data-prosemirror-node-block=\"true\"\u003e\u003cstrong data-prosemirror-content-type=\"mark\" data-prosemirror-mark-name=\"strong\"\u003eWater Resistance:\u003c\/strong\u003e Originally rated to approximately 30 meters on many period specifications; current water resistance not guaranteed\u003c\/p\u003e\u003c\/li\u003e\n\u003cli data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"listItem\" data-prosemirror-node-block=\"true\"\u003e\u003cp data-prosemirror-content-type=\"node\" data-prosemirror-node-name=\"paragraph\" data-prosemirror-node-block=\"true\"\u003e\u003cstrong data-prosemirror-content-type=\"mark\" data-prosemirror-mark-name=\"strong\"\u003eFunctions:\u003c\/strong\u003e Hours, Minutes, Small Seconds, Central Chronograph Seconds, 30-Minute Counter, 12-Hour Counter \u0026amp; Tachymeter\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OMEGA","offers":[{"title":"Default Title","offer_id":50624916258916,"sku":"EB-287605733651","price":5195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0763\/4308\/3108\/files\/57_3d691cd7-ac01-42d2-a669-91e82bf04e43.png?v=1790270619","url":"https:\/\/kronos-watches.com\/products\/omega-speedmaster-professional-moonwatch-hesalite-sandwich-ref-3572-51","provider":"Kronos Watches","version":"1.0","type":"link"}