[maple_leaf_eh]

The coin could not have gotten into the Ferret before 1960 (more likely 1961), and that was probably in Canada.

Labatt 50 is now sort of an old man's beer, in its day there were only two brands worth drinking. Labatts 50 and Molson Canadian.

Are those .22LR empties?

Finally, what is the headstamp on the blanks? I'm guessing DA.