Seiko Sealion 30 Jewels
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Thread: Seiko Sealion 30 Jewels

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  1. #1
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    Seiko Sealion 30 Jewels

    Where does this model (Sealion, 30 jewels, diashock) and movement (5206?) rank in terms of quality for Seiko? Is it an early 70s model? Deciding whether to pick up. Thanks, guys.
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  2. #2
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    Re: Seiko Sealion 30 Jewels

    Could be a late 1960's to early 1970's model. The Seiko Sealion CR-220 used a 30J 8305 movement

    Yes it is worth picking up as it is a quality piece
    bsshog40 likes this.

  3. #3
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    Re: Seiko Sealion 30 Jewels

    I picked it up. It runs and is not in bad shape, though there is a decent ding on the left side of the bezel (for $8.00 I can't complain). According to the serial number it was made in 1967.

    All SS case, graphite colored dial. It is filthy, but should clean up nicely.

    It is a 8306-8120T AD. Caseback says 8306-8090. What does "AD" stand for? I assume the T means "Tritium."

    The screwdown caseback is on tight. I need to work on it some more.

    Also, I can't tell if the crystal is glass or acrylic. Any way to tell? I am itching to polish the crystal, but don't want to chance it on mineral.

    Now I need to decide whether to add it to the collection and have it serviced. Keep or sell?
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  5. #4
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    Re: Seiko Sealion 30 Jewels

    Here is a better photo. I realized the other pics are pretty bad. Sorry!

    By the way, does a cheat sheet exist somewhere to set the date?
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    CC Texas likes this.

  6. #5
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    Re: Seiko Sealion 30 Jewels

    $8.00? Thats a deal!!

    I meant 8306 in my previous post since it had day/date

    To set the day/date

    Pull the crown out to the first position, you should now be able to set the date.

    To set the day, turn the hands from 9 pm to 2am and back until the day you want is there.

    This watch should also hack and hand wind

  7. #6
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    Re: Seiko Sealion 30 Jewels

    Quote Originally Posted by journeyforce View Post
    $8.00? Thats a deal!!

    I meant 8306 in my previous post since it had day/date

    To set the day/date

    Pull the crown out to the first position, you should now be able to set the date.

    To set the day, turn the hands from 9 pm to 2am and back until the day you want is there.

    This watch should also hack and hand wind
    Thanks. I was able to set using your instructions. It does not appear to hack. It could be the hacking mechanism is malfunctioning. Lord knows when this watch was last serviced.

    Yes, it was only 8 bucks. All the watches and watch parts were $8 (including a non-jeweled Timex, a Benrus Quartz and a watch case/bracelet minus the watch). I am going to watch this company's sales in the future for other deals.

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