thick card sleeves Fanatics Collectibles Soft and premium sports collectibles Beckett Shield Thick Card Sleeves

Valuable Gold Pokemon cards usually arent real gold, except for limited editions like The Pokmon Companys 2016 24k gold card that literally comes in its own freakin box

Smell and Finish Test It might be unconventional, but even the smell can be used to detect counterfeit Pokmon cards

Despite it being a pretty card, this holofoil is currently only valued at $2.72 USD on TCGplayer

Since the first original printing of this card was only given to the winners of that specific tournament (and theres only about 75 or so floating around), its easy to see why the Magikarp Tamamushi promo card is worth anywhere from $15,000 to $20,000 today