What is the value of a 1904 US 20 dollar gold piece?

Answer 1

1904 isn't a rare year for double eagles. Look on the back of the coin to see if there's a small mint mark letter. It may be blank or there may be an S.

Numismedia lists the following approximate retail values as of 03/2011:

No mint mark (Philadelphia):

Moderately worn - $1,700

Slightly worn - $1,730

Almost no wear - $1,766

Uncirculated - $1,840 to $70,200 depending on quality

"S" mint mark (San Francisco):

Very worn - $1,670

Moderately worn - $1,700

Slightly worn - $1,730

Almost no wear - $1,766

Uncirculated - $1,840 to $6,110

DISCLAIMER: The retail values quoted are the best available as of the date shown, but may vary significantly due to changes in the precious metals market. Also the wholesale (buying) price of a coin will be less than the selling (retail) price. A reputable coin dealer will be able to give a more accurate valuation based on inspection of the coin.