1 Cash - Xianping Yuanbao, Tin imitation

Tin "cash" imitations circulated widely across Southeast Asian trading networks as a locally produced substitute for imported Chinese copper coins, which were in chronic short supply throughout the region. The Xianping reign (998–1003 AD, Emperor Zhenzong of Song) provided one of the more commonly imitated reverse types, likely because genuine Xianping cash arrived in sufficient quantity to establish the design as recognizable and trustworthy in local markets.

At 0.36 grams, this piece is a fraction of the weight of any genuine Song cash. Tin was the practical choice — abundantly mined on the peninsula — but it degrades faster than copper, which explains the rarity of survivors in any condition.