{"product_id":"wwii-waltham-u-s-a-admiralty-pattern-no-6-asdic-stopwatch-royal-navy-issue-copy","title":"WWII Waltham U.S.A. Admiralty Pattern No.6 ASDIC Stopwatch – Royal Navy Issue","description":"\u003carticle data-scroll-anchor=\"false\" data-testid=\"conversation-turn-24\" dir=\"auto\" class=\"text-token-text-primary w-full\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto [--thread-content-margin:--spacing(4)] @[37rem]:[--thread-content-margin:--spacing(6)] @[72rem]:[--thread-content-margin:--spacing(16)] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:32rem] @[34rem]:[--thread-content-max-width:40rem] @[64rem]:[--thread-content-max-width:48rem] mx-auto flex max-w-(--thread-content-max-width) flex-1 text-base gap-4 md:gap-5 lg:gap-6 group\/turn-messages focus-visible:outline-hidden\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"group\/conversation-turn relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"relative flex-col gap-1 md:gap-3\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col grow\"\u003e\n\u003cdiv data-message-model-slug=\"gpt-4o\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+\u0026amp;]:mt-5\" dir=\"auto\" data-message-id=\"f7716f99-5e61-49ad-b36c-ba487f0f7915\" data-message-author-role=\"assistant\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[3px]\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full break-words light\"\u003e\n\u003cp data-start=\"293\" data-end=\"709\"\u003eThis rare \u003cstrong data-start=\"342\" data-end=\"404\"\u003eWWII Waltham U.S.A. Admiralty Pattern No.6 ASDIC Stopwatch\u003c\/strong\u003e is a historically significant naval instrument, issued to the \u003cstrong data-start=\"467\" data-end=\"489\"\u003eBritish Royal Navy\u003c\/strong\u003e during the Second World War. Manufactured by \u003cstrong data-start=\"535\" data-end=\"560\"\u003eWaltham Watch Company\u003c\/strong\u003e in the United States, this precision stopwatch was used in conjunction with \u003cstrong data-start=\"637\" data-end=\"646\"\u003eASDIC\u003c\/strong\u003e (an early form of sonar) to detect and track enemy submarines.\u003c\/p\u003e\n\u003cp data-start=\"711\" data-end=\"1146\"\u003eThe robust design features a black dial with bold white Arabic numerals, split-seconds markings, and a centrally mounted second hand for precise timing. The case back is engraved with \u003cstrong data-start=\"895\" data-end=\"923\"\u003e“Admiralty Pattern No.6”\u003c\/strong\u003e, confirming its official military designation. The stopwatch functions via a top-mounted crown and pusher system, with excellent mechanical response and smooth operation—testament to Waltham’s renowned watchmaking quality.\u003c\/p\u003e\n\u003cp data-start=\"1148\" data-end=\"1516\"\u003eIts \u003cstrong data-start=\"1152\" data-end=\"1186\"\u003ewartime use in sonar detection\u003c\/strong\u003e adds both technical interest and historical weight, making it a compelling artifact for collectors of WWII militaria, naval history, or vintage timepieces. Housed in its original metal casing (where available) and well-preserved, this stopwatch is a tangible link to the vital underwater warfare technology used by Allied forces.\u003c\/p\u003e\n\u003cp data-start=\"1518\" data-end=\"1663\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eAn exceptionally rare piece, the Waltham Admiralty ASDIC stopwatch is both a fine example of wartime engineering and a valuable collector’s item.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/article\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0698\/9263\/6991\/files\/IMG_8472_4fd47403-8d76-48dc-94a3-52c650488f7b.jpg?v=1752956161\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0698\/9263\/6991\/files\/IMG_8471.jpg?v=1752956200\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0698\/9263\/6991\/files\/IMG_8470_f6086ae0-737d-4f30-9ade-d3d6c723f027.jpg?v=1752956248\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0698\/9263\/6991\/files\/IMG_8469_9881f59f-6af0-4659-9537-9c96a83336f7.jpg?v=1752956278\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0698\/9263\/6991\/files\/IMG_8468.jpg?v=1752956312\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Tommies Militaria and Collectables","offers":[{"title":"Default Title","offer_id":51924247609560,"sku":null,"price":142.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0802\/3756\/0024\/files\/IMG_8473_a0edcd73-122c-425e-af0c-3f23f6429e64.jpg?v=1782753187","url":"https:\/\/gracelothing.com\/products\/wwii-waltham-u-s-a-admiralty-pattern-no-6-asdic-stopwatch-royal-navy-issue-copy","provider":"gracelothing","version":"1.0","type":"link"}