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It's a good idea to provide the link when it exists.
The Numista rarity index is almost meaningless as it records only how many members of the site have a catalogue item. In this case, only one, but that's the case with much of the exonumia in the catalogue. Also, the more recently an item has been added to the catalogue, the higher its rarity index is going to be.
If, as the page says, it's a souvenir medal for tourists, it's probably worth no more than $10, and maybe closer to $5.
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