You may find that x-posting to the coin aficionados in /r/Numismatics will attract more, and more detailed, responses.

I can answer yes for Canada - see examples.

the image of the reigning sovereign has appeared on Canadian coins since the Mint was founded in 1908. The 1952 accession to the throne proclaimed Her Majesty Queen Elizabeth II as the Queen of Canada, and the Government of Canada reiterated its decision to retain the image of the sovereign on Canadian coins.

source: Canadian Mint FAQ