1 Tangka 'Sri Mangalam Tangka', with curves, silver

The "Sri Mangalam" tangkas were struck under the authority of the Kashag, Tibet's governing council, during a period when Nepali Gorkhali pressure on Tibetan trade was intensifying. The "with curves" designation distinguishes this die variety from the straight-line version — a distinction Tibetan numismatists use to separate what were likely different workshop productions rather than sequential issues. Both types circulated simultaneously.

Within a decade of this issue, the Gorkha invasions of 1788 and 1791 would disrupt Tibetan minting entirely, making pre-invasion tangkas the last of a relatively stable coinage tradition before Chinese Qing intervention reshaped the currency system after 1793.