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Heuer
A STAINLESS STEEL TIDE INDICATOR CHRONOGRAPH WRISTWATCH REF 2443 MVT 503652 MAREOGRAPHE CIRCA 1970
• Valjoux cal. 721 manual winding nickel lever movement, 17 jewels • silvered dial, painted Arabic numerals, gold Dauphine hands, blued steel chronograph hand, engine turned subsidiary dials for 30 minute, and 12 hour registers, tide indicator, outer minute divisions • stainless steel case, chronograph pushers, tide indication pusher, solid screw down case back • case, dial, and movement signed • with a stainless steel Heuer buckle
diameter 37 mm
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相關資料

Heuer began production of its “tide indication” chronographs, which they called Mareographs, in the early 1950s.  This present lot is an excellent example of the second series reference 2443.  The firm also began using the Valjoux 72 movement with the ref. 2443, allowing for a smaller and thinner case.  The second series ref. 2443 also has a higher and smaller hour recorder, allowing for the addition of numerals 5 and 7 to the chapter ring around the dial.

More commonly known as the “Seafarer,” the Mareograph especially appealed to outdoors-men and adventurers due to the register displaying tide indications on the dial.  This complication is based on John Alden Knight's "solunar theory," which suggests that fisherman, huntsmen and sailors could determine the best dates and times to hunt and fish based on tide patterns.

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