Tampang Tin hat

Pahang's tampang coinage circulated during a period when the sultanate's tin trade was substantial enough to warrant its own monetary medium, but the form itself is older than the sultanate's formal political structures — hat-shaped tin currency had been cast across the Malay peninsula for centuries before any standardized Islamic administration formalized it. The specific weight tolerance on these pieces varied considerably between castings, which tells you something about how exchange actually worked: by rough equivalence, not precision.

Production ended as British commercial pressure and imported coinage eroded indigenous monetary forms in the 1870s.