Question: are half crowns made of silver?
Answer: King George V 1910–1936: silver half crown, sterling silver (92½% silver) until 1919, then 50% silver. King Edward VIII 1936: 50% silver half crown. Not issued for circulation. King George VI 1937–1952: 50% silver half crowns were issued until 1946 when the metal was changed to cupro-nickel.