What's the heaviest coin in use today? I tried to find the answer but I only found the heaviest coin in history (Sweden, 17th century, almost 20 kilos!).
50 cent coin of Australia mass of 15.55g
50 cent coin of New Zealand mass of 13.61g
50 cent coins as a 12-sided shape for 1969 and all following years, but the 12 sided issue was minted as a specimen piece in 1966-67 to test the design. It has since been issued in both standard and commemorative designs. The standard designs on both versions of the coin are the same: the obverse carries the effigy of the sovereign, and the reverse shows the Coat of Arms of Australia. The dodecagonal version has a mass of 15.55g and a diameter of 31.51mm, and the round, silver version has a mass of 13.28g and diameter of 31.51mm.
Alloy: Cupro-nickelDiameter: 31.73mmWeight: 13.61gDesign: The barque Endeavour, commanded by Captain Cook, sailing south, with Mount Taranaki in the distance.Edge thickness: 2.33mmEdge treatment: Five equally spaced plain segments separated by milling
http://www.rbnz.govt.nz/currency/money/0101459.html
canada now has the heaviest coins in use todays and will be for sell soon
200 pounds
http://www.canada.com/topics/news/national/story.html?id=916741af-6f18-4cd0-a877-66aa3e6ccb2e&k=93706
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