Annam copper coin bear Song reign title Chun Hua Yuan Bao
A piece of Annam copper coin found in java, Indonesia. The coin coincidence with a Chinese Song Dynasty coin Chun Hua Yuan Bao, but with light weight and small size.
This type of coin is believed to be produced in Annam (ancient Vietnam). 22.8mm, 2.7g, Price 5 USD @ dong_hua_zhai's Coins and Antiques
Note: In ancient, Merchants from China, Vietnam, Japan and Ryukyu islands use huge junks to bring in cash coins in exchange of spices and rice with Javanese people.