Simplify the following text for a Grade 7 native English-speaking person.
Original: In the mid-1920s a modified 10 shilling ( worded as `` Half Sovereign '' ) , and reduced-size 1 , 5 and 10 pound notes were issued with the side profile of King George V on the face .
Simplified: In the middle of the 1920s a new 10 shilling banknote ( saying `` Half Sovereign '' ) , and smaller 1 , 5 and 10 pound notes were made . They all had King George V of the United Kingdom on the front .