(2015) 20p S-G4A Mule MS62 认证号82205160, PCGS号617510

In November 2008 a number of 20p coins were incorrectly minted resulting in their having no date. This problem affected less than 250,000 coins of the 136 million 20p pieces minted in 2008-09 and was due to the previous obverse (the ‘Heads’ side) being used with the new reverse (the ‘Tails’ side) design, meaning the year of issue did not feature at all.