Not a super rare can as there has been a few sold at auctions within the last couple years. Although hard to find this can in nice condition. I always found it odd that the company brand was Canada Specialties sounding country wide but I've only ever seen the cans labelled in all French.
The name also suggests that they may have specialized in "one off" type promotional packaging for smaller clients or niche markets but it's hard to believe that they would only produce one brand one time only. Maybe that's why there isn't any history available.
Just received some information from a dealer out of Quebec City who told me that a collector he knows from the area came across 3 unopened cases of this oil in the mid 80's with each case holding 8 pints. The original owner/collector currently has 5 pints, 2 were shipped to the US and the remaining tins are scattered in Canada. Apparently all tins that have come on the market have been full and sold off that way. There is no other company info available at this time.