Look at William IV's in 1863.  King George IV had a Temporalis TRIGGER POINT.  During his coronation, the crown was so heavy (it weighed 71bs when set with stones) that it gave the new king violent toothache and awful headache.  He rushed back to Buckingham Palace after the ceremony to have the offending tooth removed and he couldn’t borne the pain.  The crown was encrusted with diamonds. The frame is gold, the settings of the stones are silver. The circumference is 23¼", the height 12 3/8" and it weighs 2 lbs 13 oz. It is set with 2,873 diamonds, 273 pearls, 17 sapphires, 11 emeralds and 5 rubies.