Voted as both Change Checker’s favourite coin design of 2017 and Change Checker’s top historically significant coin, the 2017 Sir Isaac Newton 50p has the second lowest mintage figure for any commemorative 50p coin in circulation, with just 1,801,500 coins being struck.ĭesigned by Aaron West, this 50p coin was issued in 2017 to commemorate the achievements of Sir Isaac Newton and remembers the legacy he has left, 350 years after his birth in 1667.