only references to this coin I have been able to locate is NGC website “https://tinyurl.com/4tk8zdt2” “https://tinyurl.com/233up7w5”
“https://tinyurl.com/42urpx3c”. Any assistance with a reputable listing for this coin (?) would be appreciated.
dia: 17.1 w: 2.1g
NGC certification told you X number. That is “Unusual world coins” reference. 5th edition of that book is available on archive.org.
From https://archive.org/details/unusualworldcoin05edbruc/page/180/mode/2up
Based on weight yours is counterfeit of counterfeit or catalogue incorrectly assigned later mark weights to listing.
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