Discussion in 'World Coins' started by franzlflorin, Jun 13, 2021.

  1. franzlflorin

    franzlflorin New Member

    Hey everyone, need some input here. I recently picked up this 1899 peso. Weight is almost bang on and coin is nonmagnetic, but the ping test is odd—right pitch, but the ping sounds hollow (?) and doesn’t ring long enough. However, it also seems a bit thick at 3mm, and this edge is the most concerning part—undoubtedly the reason why the coin is so thick. The grooves seem thicker than a 1909 peso I have, and also seem to be wavy—when looking at the coin horizontally, they appear to undulate.
    IMG_3875.jpg IMG_3870.jpg IMG_3869.jpg
    Perhaps a casting seam?
    potty dollar 1878 likes this.
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  3. potty dollar 1878

    potty dollar 1878 Well-Known Member

    I'm not going to say fake for now but very concerning to me.
    franzlflorin likes this.
  4. franzlflorin

    franzlflorin New Member

    Sharing some more photos. There appear to be denticles in the obverse rim, and the reverse rim seems to be lumpy--almost like a cud? Also note the missing details of the ribbon ("breaks"..?)

    Attached Files:

    Last edited: Jun 13, 2021
  5. Robert Ransom

    Robert Ransom Well-Known Member

    If this coin is actually a casting, it is a good one. The thing that has me concerned is the edge which is, IMO, not correct and it appears to be a sandwich.
    manny9655 and franzlflorin like this.
  6. Col_Fury

    Col_Fury New Member

    While not an expert, this period of Mexican coinage is of great interest to me.

    I believe the thickness "should" be 2.8 mm. I would agree the edge does look 'thick.'

    For those coins which I have concerns, I do one or both of the following;

    Specific Gravity Test

    XRF Scan

    If you have a scale that goes to .0001 specific gravity testing is fairly reliable and easy. Google the directions.

    If you live near a college, more likely than not you can locate someone in a chemistry, engineering, or geology lab that has a portable XRF scanner. I made friends with a professor at my local college and he will test coins a few times a year for me in exchange for six pack.
  7. manny9655

    manny9655 Well-Known Member

    I'd like to see more of the edge. There appears to be a seam of some sort on the one side but not on the other.
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