Exactus 15 Rubis
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  • 1 Post By Hartmut Richter

Thread: Exactus 15 Rubis

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  1. #1
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    Exactus 15 Rubis

    Picked this up on Ebay recently and find it kind of interesting. The rose gold case is 33mm w/o the crown with fixed lug pins and is in great shape. The dial is also in good shape and I don't see paint creep so it may actually be original. I can't find any movement numbers and the only writing on the movement is 15 rubis, swiss made. The watch runs well and keeps good time and due to the small bezel actually wears much larger than the 33mm case width.

    I can't find much about Exactus other than the hammerhead mark 123 is Pfenninger&Cie SA. I'm guessing 1950's? Maybe an entry level solid gold watch in its day?

    Any help in identifying the movement maker and number would be great.

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    busmatt likes this.

  2. #2
    Zenith Forum Co-moderator
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    Re: Exactus 15 Rubis

    No problem. Exactus: Montres Exactus SA (later Helios SA) of Neuchatel, registered in 1945.

    Movement is a Buren Cal. 460 (the link shows the 461 with central seconds adaptation):

    bidfun-db Archiv: Uhrwerke: Buren 460



    Hartmut Richter
    busmatt likes this.

  3. #3
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    Re: Exactus 15 Rubis

    Quote Originally Posted by Hartmut Richter View Post
    No problem. Exactus: Montres Exactus SA (later Helios SA) of Neuchatel, registered in 1945.

    Movement is a Buren Cal. 460 (the link shows the 461 with central seconds adaptation):

    bidfun-db Archiv: Uhrwerke: Buren 460



    Hartmut Richter

    Awesome, thanks Hartmut!

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