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Waltham reference: rm1467
Waltham - 23j, 9 adjustments,Lossier hairspring [movement],
excellent+ Nickeloid screw back case, 55mm [back]another view [view]another view [view],
excellent Original painted metal dial,subsidiary seconds, wind indicator,dial marked "sidereal"..
Very rare Waltham Vanguard 23j ,wind indicator watch for "Sidereal" time. Sidereal time is used by astronomers and is different to solar time.This watch was probably prepared by the US Naval Observatory. The only one of its kind that I have ever seen.Very collectible. The lower winder can be pulled out and able to set the subsidiary seconds dial moved to the position wanted. One of the rarest watches in the world for an astronomer. This is one of the rarest watches in the world.! (Ref rm1467)
$17,263
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