Yu Chia Ch'ien
or Chia Ch'ien . The Chinese expression for Elm Seed Vessel money, and which is applied by Chinese writers to certain small Cash of three tchu weight, which were also termed Wu Fen Ch'ien, issued at the beginning of the Han dynasty, B.C. 206.
Source: Frey's Dictionary (American Journal of Numismatics, Vol. 50, 1916)