US$ 23.76
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Description
The difference is that those present a more solid-looking ink instead of a blurry one

1999 Base Set Mewtwo Holo #10 Price Range: $156 to $20,000 Highest Sale Price: $22,655 PSA 10 Supply: 82 On November 26, 2020, a gem mint base set Mewtwo Holo was sold for $22,655 through PWCC on eBay

As for the legitimacy of yours I would probably say its fine, even Japanese cards arent ever perfectly the same
If youre curious about what makes certain cards so valuable, our article on why Pokmon cards are so expensive breaks down the factors in detail
While the TCG offers utility cards such as Trainer cards or item cards, the Pokmon games rely solely on healing items like Full Heals or Antidotes to cure these afflictions

Id been meaning to add Powerstone Shards to my Cube, and I bought some newer cards for my Commander deck