Copper kasu

Ramanathapuram — also known as Ramnad — was a zamindari territory under the Nayaks and later a princely state whose ruling Setupati chiefs had long claimed custodianship of the Rameswaram temple complex. The kasu was a traditional unit deeply embedded in South Indian temple economies, and issues from Ramnad almost certainly circulated as much in ritual and offering contexts as in ordinary trade.

KM#6 is poorly documented in most standard references, with attribution to the broader 19th-century period reflecting uncertainty about which Setupati raja authorized the striking.