This 1999 set of three unopened English version theme decks from Wizards of the Coast represents a significant piece of Pokémon Trading Card Game history, coinciding with the franchise's explosive popularity in the late '90s.

The Old Back series is particularly sought after for its nostalgic value and rarity, as collectors appreciate the challenge of securing these in mint condition.

The premium condition and sealed status of these decks further elevate their value in Japan's collector market, where authentic, early-run products are highly coveted.

As demand for vintage Pokémon cards continues to surge, this offering stands out due to both its preservation and its representation of an era that shaped the trading card landscape.