What is the value of a 1900 US 10 dollar gold piece?

Answer 1

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 05/2010:

No mint mark (Philadelphia):

Very worn condition - $730

Moderately worn - $770

Slightly worn - $830

Almost no wear - $870

Uncirculated - $970 to $16,200 depending on quality

"S" mint mark (San Francisco):

Very worn - $730

Moderately worn - $770

Slightly worn - $830

Almost no wear - $890

Uncirculated - $1,060 to $20,590