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Deeper, Further, Faster: Why Do Some Dive Watches Have Helium Escape Valves? – Reprise - Quill & Pad
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Military Royal Navy Clearance Diver Deepsea Sea-Dweller, Ref. 116660 Stainless steel wristwatch with gas escape valve, date and bracelet Circa 2013 | Fine Watches Including Masterworks of Time, Collector's Watches | 2021 | Sotheby's
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Deepsea Sea-Dweller, Ref. 116660 Stainless steel wristwatch with date, helium escape valve and bracelet Circa 2017 | Important Watches: Part II | 2022 | Sotheby's
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