Cho-coins

Cho-coins are a currency that mainly appear in Rolypolys no Sekai Ryokou, with a minor role in the first game. The coins have yellow markings of a dollar sign and a number representing the coin's value, with the dollar sign being obscured by Cho's face. In both games, the only value of Cho-coin seen is $100.

In Rolypolys no Sekai Ryokou

According to the publisher Shinko Music's website promoting the game, they are rare and something good might come if they are picked up.

In Rolypolys no Nanakorobi Yaoki

In the word Go, Pon steals a bag containing a $100 Cho-coin. After Pon has held the coin for a while, Cho appears, beats him up, and takes the coin (because the lesson is "easy come, easy go").