L1: HeartGold Collection is a Pokémon expansion with set code ja-l1-hg. The Trademeup catalog tracks 145 cards from this set. Release date: Oct 9, 2009. Singles from this set currently range from €8.99 to €122.80. The most expensive card tracked right now is Feraligatr at €122.80. Expansions released around the same time: L1: SoulSilver Collection and Arceus.
