Found this today for cheap.. what year ?

https://youtu.be/7_1vSH2Rz9g

It may have very small printing somewhere around the seam that might give you a date code.

There are no date date codes on those cans. That version of leaf is from 59-71 when BP bought out Supertest. Because it has the All Canadian in the leaf. If it didn't have that it would be in the couple of take over years.71-73