The obverse portrait of the Queen by Ian Rank-Broadley was used on all UK coinage from 1998 to 2014 and for some 2015 coins. It was the fourth portrait of the Queen used on coinage. For the new design 50p coins the design on the reverse is best suited for a coin with its ‘point’ facing downwards, so to accommodate this the obverse has also been rotated.
The reverse design, by Matthew Dent shows the bottom part of the shield of the Royal Coat of Arms.
2015 Shield of the Royal Coat of Arms (4th Portrait)