1970's BREITLING CHRONOMATIC CAL 12
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Thread: 1970's BREITLING CHRONOMATIC CAL 12

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  1. #1
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    1970's BREITLING CHRONOMATIC CAL 12

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Size:  589.6 KBHi i have got a 1970'ish breitling chrono matic the case dial crown are signed breitling but the movement is signed heuer i am told this is probably correct considering they worked hand in hand to develop this movement. What are your opinions. I would appreciate any of your comments.
    Last edited by normaneldon; December 4th, 2011 at 13:08. Reason: added images

  2. #2
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    Re: 1970's BREITLING CHRONOMATIC CAL 12

    The development of the Chronomatic movements (Calibers 11, 11-I, 12 and 15) was a joint venture between Heuer, Breitling and a few others to create the world's first automatic chronograph.
    The caliber 12 has a few developments over the Cal. 11 and 11-I:
    • Fast beat-rate: 21'600 compared to the 19'800 in the 11 and 11-I.
    • Some components were strengthened, for example the fly-back lever.
    • Colour change: The main plates were changed from silver coloured to a gold colour.
    The Cal.12 was produced from 1971 - 80, so it would fit in with your Breitling well.

    However, the fact that your watch's movement is signed "Heuer" is strange, as Breitling and Heuer agreed that Heuer would not use "Chronomatic" on the dial, and thus Breitling wouldn't use "Heuer" signed movements.
    There were parts shortages when the movement was first made, so it could well be possible that you watch broke, and a "Heuer" signed part was used as a replacement.

    cheers,
    Jake.
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  3. #3
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    Re: 1970's BREITLING CHRONOMATIC CAL 12

    Hi, a bit off topic, but can you kindly please post a photo of the watch? I am very curious as to what this watch looks like. Breitling Chrons are very elegant watches.

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  5. #4
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    Re: 1970's BREITLING CHRONOMATIC CAL 12

    Images added
    all the best
    ng107 likes this.

  6. #5
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    Re: 1970's BREITLING CHRONOMATIC CAL 12

    Hi, that is a nice watch. One thing I might suggest is getting the watch polished by a professional jeweler/watch maker. I have had that done to two of my watches. A tag and a baume, and they look like new, with all the scratches gone. Regardless, that is a very nice watch!

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