Chunyu Si Zhu (“Chunyu 4-zhu”). 10x10mm, 2.1 grams. Hartill 13.63; Gratzer/Fishman A14.30.

Cast in city of Chunyu in Shandong.

The 4-zhu coins are known from a few dozen varieties. They were probably used as local coinage all over China in the early Han period. The coins are very rare to extremely rare.