1 Ounce RCM gold bars include a Canadian Maple Leaf picture and the bar’s weight, purity, and serial number. A recurring Maple Leaf design may be found on the back of the bar. The Royal Canadian Mint’s gold bar series is elegantly crafted and a popular choice among those wanting to acquire gold bars for financial purposes. For investors, the Royal Canadian Mint also produces gold bars in other denomination such as 5 ounce, 10 ounce and 1-kilogram.