The Northwest Indian Heritage Society of British Columbia issued three sets of commemorative trade dollars in 1977âÂÂ1979, produced by the Sheritt Mint in Fort Saskatchewan. The majority were made of nickel, but small numbers, with the same face value, were made in silver, and in some cases also in gold. 100,000 of the nickel version of each coin was minted. Each was marked as losing its value as currency on a date within the year of issue.