The 50-cent coin has been a consistent size since about 1836. It weighs exactly as much as two 25-cent or five ten-cent coins. The dollar coin has been the sa

The 50-cent coin has been a consistent size since about 1836. It weighs exactly as much as two 25-cent or five ten-cent coins. The dollar coin has been the same size since 1979, and the same colour since 2000.