pokemon cards rarity symbols How to read a card rarity? : r/PokemonTCG Pokémon Card Rarity Symbols Explained:
Description
Double prints do not exists as part of the normal production process

(And why would you

Starting with 2009s Platinum set, we would occasionally see non-mechanically unique Shiny Pokemon pop up, but no more than three or four in any set

If there are any doubts or issues that arise, we offer you a 60-day warranty on our card cases

The one I recommend the most is Pokemon TCG Live