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Thread: Spanish Cob Identification help!

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  1. #1

    Dec 2013
    8
    All Types Of Treasure Hunting

    Spanish Cob Identification help!

    Hey Everyone!

    I recently found this at a garage sale in Florida mixed in with costume jewlery. No markings indicating gold but I believe itís 14k. With that being said do you think this is a real Spanish cob and if so does anyone know what period? Looks like there is wear from salt water. Wondering if it could be from the Atocha or another shipwreck!? Crazier things have have happened on here. Any help would be greatly appreciated. Click image for larger version. 

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  2. #2
    us
    Dec 2008
    St. Augustine, FL
    3,850
    1221 times
    My educated guess is that it is a sand cast from a genuine royal. The bezel is likely 14K. There is enough detail to pass a cursory glance as real, but when you look at the details enlarged, you see voids in the devices that shouldn't/wouldn't exist. Salt water corrosion will evenly corrode a surface, but it doesn't eat away metal while leaving the surrounding metal untouched. What you see on the surface with tiny holes is evident from air bubbles in a casting.
    RTR, Army and Mackaydon like this.

  3. #3
    RTR
    RTR is offline
    us
    Roger

    Nov 2017
    Smith Mt. Lake Va.
    Teknetics Liberator Falcon MD-20
    1,981
    5607 times
    All Types Of Treasure Hunting
    Maybe a look here will help.Anyway I love it "real" or "clone"
    https://store.melfisher.com/?_ga=2.2...658.1521819597

  4. #4

    Dec 2013
    8
    All Types Of Treasure Hunting
    Quote Originally Posted by Diver_Down View Post
    My educated guess is that it is a sand cast from a genuine royal. The bezel is likely 14K. There is enough detail to pass a cursory glance as real, but when you look at the details enlarged, you see voids in the devices that shouldn't/wouldn't exist. Salt water corrosion will evenly corrode a surface, but it doesn't eat away metal while leaving the surrounding metal untouched. What you see on the surface with tiny holes is evident from air bubbles in a casting.
    Thanks Diver_Down! Any idea what period this a copy of?

  5. #5
    Charter Member
    us
    Rook

    Nov 2013
    Mississippi
    XP Deus
    5,552
    5295 times
    All Types Of Treasure Hunting
    It is a nice looking piece. Nice find.
    When you come to a fork in the road, take it.

  6. #6
    us
    Dec 2008
    St. Augustine, FL
    3,850
    1221 times
    The original was an early 1600's (Atocha time frame) Mexico City piece. Again, I could be wrong, but I don't think so as I just looked through your pictures again and can identify 10 problem areas without even counting the rice crispy effect. I wish I knew how to do the drawing on pictures that you see so often by the younger generation as it would be a good learning tool.

  7. #7
    us
    Sep 2018
    Tacoma, WA
    I have not done metal detecting since 1995 but at that time I had a Fisher underwater metal detector.
    34
    14 times
    Shipwrecks
    My experience making jewelry is that Sand casting gives you a stippling surface and not bubbles , I have many cob coins with uneven corrosion due to proximity to other metals and or coins. Sand casting doesn’t give you much detail.

  8. #8
    RTR
    RTR is offline
    us
    Roger

    Nov 2017
    Smith Mt. Lake Va.
    Teknetics Liberator Falcon MD-20
    1,981
    5607 times
    All Types Of Treasure Hunting
    Click image for larger version. 

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    Here is my clone/fake/copy/reproduction/ replica or whatever you wanna call it.........And I Love it !!Click image for larger version. 

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    Last edited by RTR; Oct 10, 2018 at 03:38 PM.

 

 

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