This unpeeled Hama-chan's Yadoking promo card from the September 1999 issue of CoroCoro Comic represents a unique piece of Pokémon history, celebrating not only the franchise's monumental popularity but also the nostalgia of late '90s Japan.

As a limited edition item from a beloved series known for its engaging characters and collectible cards, the condition of this untouched card adds significant value, particularly given the rarity of well-preserved promo items in the collector market.

The card's brand new state, coupled with the meticulous care it has received over 25 years, aligns well with the demand for pristine collectibles from the early days of Pokémon, making it highly sought after among discerning collectors.

Given current market trends, the bid of ¥595,000 reflects the strong appreciation for authentic, first-run memorabilia sourced from Japan.