Coins minted in the Year 1928

What happended in 1928?
Monarch is King George V. Prime Minister is Stanley Baldwin (Conservative). US President is Calvin Coolidge. John Logie Baird broadcasts a transatlantic television signal from London to New York and later demonstrates the world's first colour TV transmission. Alexander Fleming accidentally rediscovers the antibiotic Penicillin. Voting age for women from 30 to 21. Olympics in Amsterdam, Netherlands. Steamboat Willie, the third Mickey Mouse cartoon released, is the first sound film.