Yes, the crown on the coffin was the real crown. The Imperial State Crown, which sits atop the Queen's coffin, was made for the coronation of King George VI in 1937. Queen Elizabeth II wore it after her coronation in 1953 and used to wear it at the State Opening of Parliament each year. The gold crown is encrusted with 2,868 diamonds,11 emeralds, 269 pearls,17 sapphires, and 4 rubies.