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      The largest independent, non-commercial, consumer-oriented resource on the Internet for owners, collectors and enthusiasts of fine wristwatches. Online since 1998. | |||||||
         
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Vintage Heuer Discussion Forum 
The place for discussing 1930-1985 Heuer wristwatches, chronographs and dash-mounted timepieces. Online since May 2003.  | ||||||
	
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 It is basically a Master Time 8-day clock, in a special case designed to be water resistant. The Navia was designed to be used on the dahsboard / panel of a boat . . . thus the "Aut" prefix (for "automotive") or "Avia" suffix (for "aviation") is changed to "Nav" (for "naval", I imagine).
 Differences between Master Time and Navia include the dial, the case and the crown.
 Jeff
 
 
Click HERE to see the Navia.
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