Sovereign (English coin)
…weighed 240 grains, or half a troy ounce. King Henry VIII lessened the gold content to 22 carats, or 91.67%. Although this was part of what is called The Great Debasement, 22 carats became the gold coin standard in both the British Isles and later the United States, known as crown gold. It had a diameter of 42 millimetres…