Kingler [Blue Back] is a card from the Topsun set, classified as Unknown rarity and numbered 99. As part of the early Pokémon trading card game, it holds a unique position among collectors, reflecting the nostalgia of the original series. Currently, the card is valued at $7.04, indicating interest in both its design and historical significance within the Pokémon card market. Its scarcity contributes to its ongoing demand among enthusiasts.