The new coin had to be proportionate in size to the other gold denominations, and this resulted in a coin which weighed 2.1 grams and was 16 millimetres in diameter. It had not been realised at the time that a coin of this size was impracticably small to use, and would prove unpopular. 37,380 coins were minted, but many of them were put aside as keepsakes and many of the rest were lost. The coin was discontinued after 1718, and for the next few years there was an increased output of Guineas and Half Guineas.
Despite its minuscule size, the coin took the form of a scaled-down version of the guinea and half-guinea, including all the intricate cruciform shields on the reverse and all the king's Hanoverian titles. The coin is a fine example of the mint's work, although a magnifying glass is needed to properly appreciate it. The obverse shows a right-facing portrait of the king with the legend GEORGIVS D G M BR FR ET HIB REX F D, while the reverse shows four crowned cruciform shields separated by sceptres, with a central Star of the Order of the Garter, and the legend BRVN ET L DVX S R I A TH ET PR EL 1718 -- Duke of Brunswick and Lueneburg, Arch-Treasurer and Prince Elector of the Holy Roman Empire.
When George III came to the throne in 1760 the price of silver had again risen dramatically. Despite the unpopularity of the 1718 quarter guinea it was considered necessary to produce this coin again, to the same size and weight as before, to fill the gap between the low denomination silver coins and the larger gold coins. Unfortunately it met the same fate as its predecessor and was only produced in 1762. The obverse shows a right-facing portrait of the king with the legend GEORGIVS III DEI GRATIA, while the reverse shows a large crowned shield bearing the arms of England and Scotland, France, Ireland, and Hanover, and the legend M B F ET H REX F D B ET L D S R I A T ET E 1762 -- King of Great Britain, France, and Ireland, Duke of Brunswick and Lueneburg, Arch-Treasurer and Elector of the Holy Roman Empire.