Rare box of Pokmon cards bought for 70 in 1990s could sell for 15,000 at auction Hansons Auctioneers According to SolemnYugioh, these card holders can cause damage long term. I was wondering if anybody here has experienced this happening to their cards and what alternatives there are for storing sealed cards. : Pokemon ash and serena 6 Pokmon TCG KOREAN Pokemon Card 151 Mew EX #151 165 Mint eBay Ninetales My First Battle Pokemon