http://www.usrarecoininvestments.com/collecting/1854d-one-dol-gol.htm U.S. Rare Coin Investments article on the $1 gold coin] Retrieved 2011-11-19 The value of gold required the coin to be so small &mdash; 12 mm in diameter) &mdash; that too many people were losing them, so it had to be redesigned (In spending power, the dollar of 1849 is equal to $formatnum: today, but even that value is far exceeded by the collector value as well as by the present value of the gold content).