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The place for discussing 1930-1985 Heuer wristwatches, chronographs and dash-mounted timepieces. Online since May 2003.
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Re: Heuer Siffert Serial Number Query ???????????

for what i know the mk6 is ok from around 203k to end of production.
I don't see anything wrong in the watch you described..


: Hello there-im hoping you can help me out ?

: I have been offered a Heuer Sifert that has a serial number

: 203974

: When I’ve checked the website on the dash for the serial numbers
: that indicates a MARK 4


: The dial and handset correspond to a MARK 6 ?

: SO-did Heuer ever do this i.e. place a new watch in an old case ?

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