1 Cash

Tin cash coinage was the dominant small-denomination currency across much of the Malay peninsula for centuries, produced not by a centralized mint but by individual sultanates and Chinese merchant syndicates operating tin-rich territories in Perak, Selangor, and Pahang. The metal was locally abundant — the peninsula held some of the world's most productive tin deposits — making this an unusual case where the coin's raw material and its economic origin were essentially the same industry.