The last one for this smallest banknote story in my collection is China fen banknote. The Fen is the smallest denomination and size in China Renminbi or people currency. The unit for the Renminbi is the Yuan (元), Jiao (角), Fen (分): 1 Yuan = 10 Jiao = 100 Fen. I haven't been going to Mainland China but a friend told me that fen banknote or coin is rarely used by people in that country. All this fen banknote size is approximately at 42 mm x 90 mm. The 1 fen banknote color is brown with truck at right. The 2 fen banknote color is greenish blue with airplane at right. The 5 fen banknote color is green with ship at right.
Source: Krause Publication