GWG-1000 serial number and factory code
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  1. #1
    Member anto1980's Avatar
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    GWG-1000 serial number and factory code

    Hi G friends.
    I'm doing an analysis to see if there are several production factories for the GWG-1000 and if really does exists the Made in Japan or if they are all Cased in Thailand.
    Seems the first number of serial identify the factory so I seen 5-6 models. Where the serial begins with “201”, the back plate says “JAPAN H”.
    Where the serial begins with “202” on the plate I seen “CASED IN THAILAND”.
    So my questions are:
    Really the Mudmaster is made in 2 different factory???
    201 = Japan???
    202 = Thailand???

    Best Regards




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  2. #2
    Member WES51's Avatar
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    Re: GWG-1000 serial number and factory code

    Yes. It appears so.

    The two versions are:
    1) Japan H
    and
    2) Japan Movement, Cased in Thailand

    The models that I have so far seen only as Japan H are the Maharishi and the Cammo. But that is just based upon my personal observation, someone please correct me if I'm wrong.

    I have definitely seen the Green, Red, Black, Stealthy Black in both Japan H and Cased in Thailand version.

    I have a green one, that is the Cased in Thailand version and I LOVE it.

    I'm sure both watches will be assembled by Casio trained workers in Casio designed factories to Casio's standards.

    So I think the only difference may be based on sentimental value.
    zack20cb and Tetsu Tekubi like this.

  3. #3
    CC
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    Re: GWG-1000 serial number and factory code

    Probably exactly the same.
    Only the Premium Production Line in Japan will get special treatment.

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  5. #4
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    Re: GWG-1000 serial number and factory code

    I have a new combination for you. Sadly I had to return it but anyways, the factory code was 221D. Produced in January this year. Japan H. Have never seen this combination before.

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  6. #5
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    Re: GWG-1000 serial number and factory code

    Is a repaired watch?
    Quote Originally Posted by gartner View Post
    I have a new combination for you. Sadly I had to return it but anyways, the factory code was 221D. Produced in January this year. Japan H. Have never seen this combination before.

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  7. #6
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    Re: GWG-1000 serial number and factory code



    JAPAN H ver. also has a bigger “G” logo and futhermore the “CASIO” logo is printed in the external ring.


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    You mean refurbished? I have no idea.

  9. #8
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    Re: GWG-1000 serial number and factory code

    Here is mine.

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    Re: GWG-1000 serial number and factory code

    Quote Originally Posted by gartner View Post
    I have a new combination for you. Sadly I had to return it but anyways, the factory code was 221D. Produced in January this year. Japan H. Have never seen this combination before.

    Name:  20190429_100228.jpg
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Size:  4.02 MB
    Very interesting. The serial number is normally below the 'LIGHT' font.

    A few weeks ago there was another case posed with a similar format dual serial number. That person ended up returning the watch. If that was not you, then this is the second incident that I see this happening.

    Some time ago, I had plans to order a 'Made in Japan' case back for my 'Cased in Thailand' model. I wonder if maybe I would have received such a case back as yours.

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    Re: GWG-1000 serial number and factory code

    My GWG1000-1A3 has "Japan H" printed on it.

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