Mamemon #BO-64 is a Digimon Series 2 Booster trading card for the Digimon card game, listed as an Unknown rarity. Collectors find it notable for its placement in the Series 2 Booster set despite limited rarity information and minimal market activity. Current market value is $0.00, reflecting no recorded recent sales or price data. Its status makes it a low-liquidity piece for set completion rather than an investment target.