 There are five known types of Kucha cash coins based on the Chinese Wu Zhu's.These coins are usually characterized by their diminutive size and thin shape.Four types tend to have no inscriptions at all, while one type of coin is the "Han Gui bilingual Wu Zhu coin" (漢龜二體五銖錢, "hàn guī èr tǐ wǔ zhū qián") which is characterized by its obverse side resembling Chinese Wu Zhu coins and reverse side featuring a local Kucha script above and below the square center hole.