1400 Guineas Stakes the Beacon course at Newmarket and would be open to four-year-old colts and fillies. They paid a 200 guineas subscription each to enter their horse. Colts would carry 8 st 7 lb and fillies 8 st 4 lb. The race was initially to be run for five consecutive years from 1758, but was subsequently renewed in 1763. The weights were changed in 1768, with colts carrying 8 st 10 lb and fillies 8 st 7 lb. The race was discontinued after 1782 and a similar race was started for three-year-olds in 1784. 1400 Guineas Stakes The 1400 Guineas Stakes was
Commonwealth Cup (horse race) races in Europe. The Diamond Jubilee Stakes, run over the same course and distance at the same meeting, was closed to three-year-olds at the same time. The new race was subsequently named the Commonwealth Cup and the Buckingham Palace Stakes was removed from the Royal Ascot meeting to make room for the new race. ---- Commonwealth Cup (horse race) The Commonwealth Cup is a Group 1 flat horse race in Great Britain open to horses aged three years. It is the only Group 1 flat race in Great Britain exclusively for three-year-olds that allows geldings to compete and the first