I have several hundred-year-old Sovereigns with the mintmark of the mint in Canada where they were made. The sovereign is the UK gold coin with 0.235420 T.O. of gold that has been made since 1817. It was struck with the image of a British King or Queen, thus the name. When there was still a British Empire, a number of the colonies mined gold and it was found desirable to strike the sovereign coin in the colony near where the gold was mined. This included coins mintmarked in Canada, India, South Africa, and Australia. Here's what the "C" mint Canada coins look like in a PCGS holder.

I have 1911 and 1918 dates in MS63 condition, graded by PCGS. Gold today is trading for about $1260 per Troy Ounce.

Your choice of coin date for $425, delivered by Registered US mail in USA. A little less if you want several coins as they can ship together under one Registry number. Note that I have only one 1918 dated coin.