Hi, let me start with a little info i have found out since researching this royal coat of arms, you are spot on with this belonging to the prince of wales but i didnt know which one, so far what i can gather is it seems that this coat of arms belonged to prince of wales the prince regent, i do wonder if this enamel coat of arms had been kept within the Royal family and then mounted on the object above, the reason im thinking this way is because the date the item was assayed is 1912 which was would have been the year for Edward VIII 18th birthday, the silversmith used was an important silversmith also, maybe this was commissioned by his father George V as a special gift for his 18th birthday, i may be out completely but so far this seems the most logical


Queen Anne died in 1714 with no direct heir and under the terms of the Act of Settlement of 1714 the crown passed to George Louis, the Electoral Prince of Hanover in Germany, who became King George I. His royal arms for Great Britain displayed the arms of Hanover in the fourth quarter. (George and his four male successors retained their German princely titles.) In this form the arms lasted until 1801. In that year, King George III formerly renounced Edward III's claim to the French crown, and the French arms were deleted. T
he new arms displayed England in the first and fourth quarters, Scotland in the second quarter and Ireland in the third quarter, with an escutcheon of the arms of Hanover under an electoral cap to the centre. The cap was changed to a royal crown in 1816, when Hanover become a kingdom.
King William IV (reigned 1830-37) was the last British monarch who was also King of Hanover. Upon his death the throne passed to his niece, Princess Victoria of Kent. Since according to the Salic Law prevailing in Germany a woman could not inherit a crown in her own right, the Kingdom of Hanover passed to George III's fifth son, Ernest Augustus, Duke of Cumberland.
The Hanoverian escutcheon was removed from the British royal arms, leaving them in the form still used nowadays. Best wishes
Mandy