1343 Edward III florin ($6.8 million). 1787 Brasher Doubloon ($7.4 million). 1907 Saint-Gaudens double eagle ($7.6 million). 1933 Double eagle ($7.6 million). 1794/5 Flowing hair silver/copper dollar ($10 million)

Measuring 34 mm in diameter, the coins weigh 33.436 grams each (one ouncecontains 31.1 grams), are alloys of 90% gold and 10% copper, and each contains .9675 ounce of gold. Twenty-dollar liberty gold coins have reeded (milled) edges, but the St. Gaudens have lettered edges

The gold dollar or gold one-dollar piece is a gold coin that was struck as a regular issue by the united states bureau of the mint from 1849 to 1889. The coin had three types over its lifetime, all designed by mint chief engraver James B. Longacre