1 Cash - Yong xing

Bangka Island's tin cash coinage was a direct product of the island's dominant industry — Bangka was one of the world's principal tin-producing territories, and local authorities minted in the very metal their economy ran on. Dutch colonial administration formalized tin extraction on the island through the VOC and later the Nederlandsch-Indische gouvernement, but these cash pieces predate or exist alongside that apparatus, reflecting the monetary pragmatism of regional Chinese mining communities who controlled much of the actual smelting infrastructure.

The "Yong xing" designation likely references a specific kongsi or merchant association rather than a ruling authority in any conventional sense.