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Probably a Parker Hale, if it has a detachable magazine, good luck finding one, I have run into many guys who owned these and had lost the magazine With no luck finding a replacement.
Could be a NAACO (North America Arms Co), made in Toronto. Not sure, though. I have an Eaton's .22 that is a Truline NAACO. I don't have it here so I can't help you much.