William Wyon created two effigy's of George IV, they were used on British coinage during the king's reign

William Wyon's effigies are particularly noteworthy because they were featured on the "Bare Head" coinage of George IV's reign. This refers to the fact that the king is depicted without a laurel wreath or other headwear, a departure from previous British monarchs on coinage. The bare head design is attributed to Wyon, and it's considered a distinctive and elegant element of these coins.