What is the size of an 1853 one dollar gold coin?

The 1853 one dollar gold coin, also known as the Liberty Head design, has a diameter of approximately 13 millimeters (0.51 inches) and weighs about 1.672 grams. This coin is composed of 90% gold and 10% copper, making it part of the United States' historical gold coinage. Its small size and gold content make it a notable collectible among numismatists.