Reference
Note:
Vietnamese calligraphy (網至道手), with large characters, cf Kyushu Gen Yu Tsu Ho coins. 上 written sideways to left of hole, not as in Hartill EJC, Figure 3.74
Reference
Note:
Thierry (2012a) states that this specimen is an "unofficial casting", a copy of a Yuan You tong bao in brass. He refers it to the 18th Century as a member of the "late small currency known as tiền giân 'diminutive coins'."