Ornatus-Mundi[Zenith]
7136
A comparative pic between a chronometer-certified and a standard T-40...
Nov 04, 2014,02:32 AM
which I found on the web:
(left, non-chronometer; right, chronometer version)
Note the difference in finishing as well as in the balance wheel and the hairspring stud. Furthermore, the chronometer version is individually numbered also on the barrel bridge.
Hope this helps!
Cheers,
Magnus
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Old Zenith chronomete
By: PakSu : October 25th, 2014-13:26
what is this printing in dial between centre and small cecond?...
It stands for 40-T, one of Zenith's Observatory Chronometer movements...
By: Ornatus-Mundi : October 28th, 2014-14:27
It could find out the following: The Cal. 40-T is a 12" hand wound movement (thanks blomman for the pointer!) beating with 18.000 bph, produced between 1947 and 1963 in a quantity of 162.000 pieces. There were standard and chronometer-certified movements....
Zenith
By: PakSu : October 30th, 2014-11:03
Great! Thanks!
A comparative pic between a chronometer-certified and a standard T-40...
By: Ornatus-Mundi : November 4th, 2014-02:32
which I found on the web: (left, non-chronometer; right, chronometer version) Note the difference in finishing as well as in the balance wheel and the hairspring stud. Furthermore, the chronometer version is individually numbered also on the barrel bridge...