Chronometre Diva need Help
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Thread: Chronometre Diva need Help

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  1. #1
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    Confused Chronometre Diva need Help

    Have this Diva Chronometer that needs to be refurbished, however the balance wheel is not working. I am not familiar with this brand and could not find much info about it. I guess that the movement is not in-house (for sure). Can any one help to determine the movement please?

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  2. #2
    Sponsor thoth's Avatar
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    Re: Chronometre Diva need Help

    If you get the dial and hands off and take a pic of the dial side of the movement I can see what I can find based on the set bridge.
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  3. #3
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    Re: Chronometre Diva need Help

    I'm fairly sure that it's a bridge modified Adolf Schild Cal. AS 340 or derivative:

    bidfun-db Archiv: Uhrwerke: AS 340

    ...but thoth is right: a look at the keyless works would help here.

    Hartmut Richter
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  5. #4
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    Re: Chronometre Diva need Help

    Thank you! Let me get to workshop tomorrow and make photos of the other side!
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  6. #5
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    Quote Originally Posted by Hartmut Richter View Post
    I'm fairly sure that it's a bridge modified Adolf Schild Cal. AS 340 or derivative:

    bidfun-db Archiv: Uhrwerke: AS 340

    ...but thoth is right: a look at the keyless works would help here.

    Hartmut Richter
    Hi! Here are photos! definetely AS
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  7. #6
    Sponsor thoth's Avatar
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    Re: Chronometre Diva need Help

    How many mm is the main\pillar plate? That will give us the number of '".

    I'm using the BestFit book and they are split up by diameter.
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  8. #7
    Sponsor thoth's Avatar
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    Re: Chronometre Diva need Help

    Going out on a limb here. I could not find it in Bestfit. I am betting the number next to AS is the cal. So it would be an AS 46.

    Sent from my SM-G920R4 using Tapatalk
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  9. #8
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    Quote Originally Posted by thoth View Post
    Going out on a limb here. I could not find it in Bestfit. I am betting the number next to AS is the cal. So it would be an AS 46.

    Sent from my SM-G920R4 using Tapatalk
    It looks like 1,82 mm - is 0,071”... Actuallu do not know :-/
    Do you think that balance from AS 302 or AS 340 will fit?!
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  10. #9
    Sponsor thoth's Avatar
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    Re: Chronometre Diva need Help

    I was thinking diameter around rather than thickness.

    If this is a movement that was not listed by many parts suppliers then it would be a case of having someone measure the old staff and the hole in the hole jewels and see if they can match one up. A 302 or 340 may work but measuring would tell you for sure before one was installed and found that it would not work.

    It is also possible to have someone make a staff but now you are looking at a more expensive job and unless you feel the watch is worth that kind of cost then that would be up to you.
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  11. #10
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    Re: Chronometre Diva need Help

    Thank you! Yes actually I can understand that making a new balance staff is very expensive work, and not each watchmaker here can make it...It is a matter when it it is grandmother watch and very important for a person to save the authentic condition...I think I will go with the donor thing. Should work I guess...The Diameter is standard BTW. Same as 302 and 340.

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