I think I collected ALL metal trading cards! Including the 23K gold plated ones from 1999! : r PokemonTCG Pokmon Pokmon TCG Burger King Individual Trading Card Games for sale eBay Pokemon Burger King 23k Gold Plated Card Set (Sealed) Rare Collectible Jigglypuff 1999 Pokmon 23K Gold Plated Trading Card Limited Edition In 1999, Burger King released a special promotion featuring 23K gold plated Pokmon cards. Each card came sealed in a Pok Ball case with a Certificate of Authenticity, and could be added to The Rarest and Most Expensive Pikachu Cards CGC