Reference
Note:
Hartill (GCC, p. 146) places this unattributed Vietnamese Càn Phù Nguyên Bảo coin among his category: ‘Small Copper – Distinct Calligraphy, Group 1. (“An Phap type”)’. HCR 58922 - 58925 belong to this type. Hartill proposes (GCC, p. 143) that “An Phap type” coins were manufactured in North Vietnam under the Mạc between 1540 and 1590. This provisional dating has been followed here.