Canadian proof marks.
The Dominion of Canada proof mark is crossed pennants with a Crown in the upper quadrant a P in the lower and D C on the sides, sometimes just the crossed pennants are used, you will find it on S&W and others.
An odd looking maple leaf with a P at the bottom was one of the marks used by Long Branch.
As Dale Z stated Canada does not have commercial proofs.
John Claydon
SWCA 348
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