See also: made beaver (def. 1)
- 1771  (1964)  For a small brass kettle of two pounds, or two and a half weight, they pay sixty martins, or twenty beaver in other kinds of furrs. . . .
- 1907  So that the Indian might know the amount of his means of trade the furs were taken in first and valued at a certain well-known currency of that particular part of the country in which he resided, i. e., "Made Beaver" or so many "Martens."