Worlds largest gold coin

Ottawa, Ontario, October 18, 2007 – The Royal Canadian Mint (RCM) is proud to announce that its masterpiece 100-kg, 99.999% pure gold bullion coin with a $1 million face value has been proven by Guinness World Records to be the world's largest gold coin. After several interested buyers came forward, the RCM decided to make a very limited quantity available for sale. To date, five of these majestic gold bullion coins, weighing 3,215 troy ounces each, have been purchased by investors from Canada and abroad.

3,215 troy ounces (of many extra fine 9s) gives us something that otter be worth around $ 5,460,000, at least, if we find one laying around today.

Not to be outdone in such matters, The Perth Mint in Australia took 18 months and unveiled a 1 tonne, 1,000 kilograms, or 32,150.7466 troy monster coin in late 2011. My math makes this baby worth $ 54,655,500 on a real bad day.