This card is included in the Pokémon card "Old Backs, Volume 2: Pokémon Jungle," released in 1997. Nostalgia (Old Backs): This is one of the earliest Pokémon cards and remains popular with collectors. Rarity: Pokémon Jungle is an older pack, and the inclusion rate of shiny cards in particular is low, making it difficult to find a mint-condition one. Design: In addition to the popularity of Jolteon itself, the illustration on the old back is also attractive. Collectible Desire: PSA-certified cards (certified cards) are also traded, making them extremely valuable as collectibles.