The Canadian Gold Maple Leaf, unlike its American Counterpart, is .9999 pure gold. This makes it unfit for circulation but great for investors. Minted by the Royal Canadian Mint on an annual basis, the first coin was struck in 1979 as a challenge to the Krugerrand gold coins from South Africa, which were being boycotted due to Apartheid.
Other sizes and denominations include the 1/10 Troy oz. ($5), 1/4 Troy oz. ($10), and the 1/2 Troy oz. ($20). Unlike the standard ounce, a Troy Ounce has 31.1 grams (versus 28). All Gold and Silver is measured in Troy Ounces.
Positives: The Gold Maple Leaf is also IRA eligible. The Gold Confiscation Act of 1934-1974 made it illegal to own more than 5 ounces of gold in the United States. Since the Canadian Gold Maple Leaf is Legal Tender and the rightful property of the Canadian Government, confiscating Maples could be considered an Act of War.
Negatives: As stated, gold is a softer metal and pure gold is more readily scratched or scuffed. You need to store your Maples in coin sleeves or tubes to prevent this from happening.