DCHP-1 Online
Michilimackinac currency Hist. 
a system of exchange in use during the latter part of the eighteenth century in the fur-trading regions of the upper Great Lakes.
See also: Grand Portage currency
- 1765 (1901) It is in beaver that accounts are kept at Michilimackinac; but in defect of this article, other furs and skins are accepted in payments, being first reduced unto their value in beaver, Beaver was at this time at the price of two shillings and sixpence per pound, Michilimackinac currency; otter skins, at six shillings each; marten, at one shilling and sixpence, and others in proportion.
- 1765 (1901) It is in beaver that accounts are kept at Michilimackinac; but in defect of this article, other furs and skins are accepted in payments, being first reduced unto their value in beaver, Beaver was at this time at the price of two shillings and sixpence per pound, Michilimackinac currency; otter skins, at six shillings each; marten, at one shilling and sixpence, and others in proportion.