The "Harry Potter Trading Card Game Diagon Alley Complete Commons #51-80" is a set of standard-sized trading cards from the Diagon Alley expansion. This set includes cards featuring the character Harry Potter and is part of the Harry Potter Trading Card Game, manufactured by Wizards of the Coast in the United States in the year 2001. The cards are in excellent condition and are part of the common rarity level, making them suitable for boys and girls who enjoy collectible card games.