Chinese Coins
Early square-holed round coins seem to be found exclusively in areas associated with knife money. They come in two distinct series, the relatively common "MING" types that appear to be related to the ming knifes, and the much scarcer "I" series which seem to represent the issues of a single mint called "I".
The only inscriptions they have is their monetary designation of "HUO", a character which has come to mean "knife money", but which had also become a unit of denomination by the time these coins were issued.
You can either tie your Chinese Coins together with red string or red ribbon and/or place them in a red envelope in your Money or Wealth area.