A real one is 34mm.
All US Double Eagles are the same size.
Only one size of the 1924 Double Eagle was struck by the US Mint.
Gold
Coinage of the gold dollar was begun in 1849; those coined 1849 to 1854 are known as the Liberty head or small sized type. In 1854 the piece was made larger in diameter and thinner and the design was changed to a feather headdress on a female, popularly known as the Indian head type or larger size gold dollar (1854 was coined in both types). In 1856 the type was changed slightly by enlarging the size of the head.
It don't matter what denomination the piece is, it's not a U.S. Mint product and has NO numismatic value at all. The 10mil 24k description means it has about 5 cents worth of gold on it.
Gold's weight depends on the size and shape of the piece of gold. Its density is 19.3 grams per cubic centimeter.
If it's a modern $1 coin (1987 or later) and the same size as a US $1 coin, it's a common circulation piece worth only face value. It's made of brass-plated nickel, not gold.
Not enough to make money on A piece of gold the size of a quarter will plate the Empire State Building
No. U.S. dimes were never made of gold. A gold coin from the same time, and of similar size, was the $2 1/2 gold piece.
No, nor is there a NICKEL the size of a silver dollar. You have either a fantasy piece, a novelty item, or possibly a bullion piece. The first two are worth a buck or so, but if your "coin" has something like "1 oz fine silver" on the back it's a precious metal piece worth about $17 at June 2008 prices.
yes its true. gold has a very high malliability that allows it to stretch and flex to incredible sized and shapes.
Diameter - 21.6 mm Weight - 8.25 gm