Hamilton Thin-O-Matic... eta style or micro rotor???
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Thread: Hamilton Thin-O-Matic... eta style or micro rotor???

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  1. #1
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    Hamilton Thin-O-Matic... eta style or micro rotor???

    Hello all! I have a quick question for you experts out there. I'm a fellow watch lover, and I recently purchased a Hamilton Thin-o-Matic on eBay for 110 dollars. However, no pictures of the movement were in the ad, so I have no clue if there is an eta or micro rotor movement in it. Any help appreciated!

    Vintage Hamilton Swiss Thin O Matic 10K GF Watch | eBay

  2. #2
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    Re: Hamilton Thin-O-Matic... eta style or micro rotor???

    Hi there,

    the signature "Lifetime Mainspring" indicates a tuned ETA.
    Again and again my advice: Never buy a watch without movement pic.

    Regards, Roland Ranfft

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    Re: Hamilton Thin-O-Matic... eta style or micro rotor???

    Thanks Mr. Ranfft. I'm new to the Thin O Matic line, and I was simply curious. I still love the watch itself, and will continue to enjoy it as I learn the art of watchmaking. However, I'll be sure to keep your advice in mind next time, so that I don't over-spend.

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    Re: Hamilton Thin-O-Matic... eta style or micro rotor???

    Hi there,

    Quote Originally Posted by Tyler Daniel View Post
    I still love the watch itself.....
    Well, you had some luck. Here the last two cases, were I didn't follow my own advice:
    Ranfft Watches, Troubles
    Ranfft Watches, Troubles
    Both watches simply looked too attractive to let them pass just because movement pics were missing.

    Regards, Roland Ranfft

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    Re: Hamilton Thin-O-Matic... eta style or micro rotor???

    Ouch. That has to hurt. I've bought many watches on ebay, and haven't gotten burned yet. Of course, most of the watches I do buy are relatively cheap. However, I do have one question: how do you find so many different watch movements? I've started a collection of my own to practice on and even wear casually, but I've yet to encounter any kind of really high grade movements. One of the reasons I bought a Thin o Matic was to not only get an automatic movement, but to try my luck and get a micro rotor movement as well. Also, how many watches do you own?

  7. #6
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    Re: Hamilton Thin-O-Matic... eta style or micro rotor???

    Hi there,

    Quote Originally Posted by Tyler Daniel View Post
    However, I do have one question: how do you find so many different watch movements?
    I collect mainly pocket watches from the 18th and 19th century, as this was their high time. Earlier samples are too expensive for me, and later don't add that many features. These are not many, and their contribution to my archive is small. But I run an auction site, and an online watchmaker service. And waches I get from consignors for auctioning as well as those I get for repair/service by my watchmaker filled the archive pretty fast.

    The last years I also picked up watches or movements from ebay, if they fill gaps in my archive.And even experience from some decades can't prevent that I'm ripped off now and then. And the more desirable (i.e. expensive) a watch is, the higher the chance. But the majority of sellers are honest people, and it happens not often.

    Regards, Roland Ranfft
    Last edited by Roland Ranfft; August 5th, 2014 at 05:33.

  8. #7
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    Re: Hamilton Thin-O-Matic... eta style or micro rotor???

    Quote Originally Posted by Roland Ranfft View Post
    Hi there,

    the signature "Lifetime Mainspring" indicates a tuned ETA.
    Again and again my advice: Never buy a watch without movement pic.

    Regards, Roland Ranfft
    I took the watch to my friend, and we opened it to find that there was a micro rotor movement in it.Name:  IMG_0366.JPG
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