Thanks for showing the real money of yesteryear, @bdmillergallery. My guess, too, is the 0.5 means the coin's Silver content was reduced to 50% pure. 1921, like a hundred years old. Century Club! Beginning of the "Roaring Twenties." Good times, after The Great War. But an alcohol ban, a Great Depression, very rough times, for average People, and a second World War soon to shock the world.