20 Coin

 are coins that appear in Mario & Luigi: Partners in Time. They appear as blue coins with a number 20 on them. As their name implies, each of these blue coins are worth twenty normal coins. They are uncommon and are mostly found in ? Blocks (usually hard-to-reach ones), and sometimes found in the very long chasms in Thwomp Caverns, along with gold coins. 20 Blue Coins are not to be confused with Blue Coins, which are only worth five gold coins.