Japanese Coin Pendant in Yellow Gold

This Steven Battelle pendant is in 18K yellow gold.

Japan, Meji Restoration, 1867-1869, AV 2 Bu. Obv: Paulownia Flower (Chrysanthenum) in panel above 2 characters reading; "Ni-Bu 2-Bu, all in a border of pellets Rev: Mark of Value and Mintmaster´s name, all within a border of pellets