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5 Coins are a larger type of coin worth 5 normal coins apiece, concealed within blocks in most of the Mario & Luigi series. In Mario & Luigi: Paper Jam (shown right), 5 Coins can occasionally be found scattered around outside of blocks.
In Super Princess Peach, large coins that are worth five regular ones appear in levels alongside other types of coins, but they are notably less common. Upon buying a Courage Soda, every enemy Princess Peach whacks with Perry gives out such a coin, with the number of coins dropped increasing by 2.5 per every two enemies when whacked in rapid succession.
5 Coins are also encountered in Paper Mario: Sticker Star, where they are sometimes dropped by enemies upon defeat or at a level's completion.