weighed currency
秤量貨幣 / weighed-currency — Institutions
Money used by weight rather than by count.
Keichō chōginAD 1601–1695
Mameita-gin (with the 'gen' mark)AD 1695–1706
Pieces, like lumps of silver, that are irregular in both shape and weight. ⚠ They must be weighed and assayed for each use, but in return, one does not need to trust the issuer. This system persisted longer in places without a trustworthy issuing authority.