Numismedia lists the following retail values as of 06/2009. Given the high-end prices shown you should have your coin evaluated by a dealer who specializes in U.S. gold coins.
No mint mark:
$1300 to 2700 in circulated condition, depending on wear
$4400 or more in uncirculated condition
"S" mint mark
$1300 to 6000 circulated; $8000+ uncirculated
"O" mint mark
$1600 to 60,000 circulated; $112,000+ uncirculated
You tell me?
The ONLY legal 1933 double eagle sold in 2002 for $7,590,020.00
The 1895 Double Eagle is common date coin, retail values are $1,450.00-$1,650.00 for circulated coins.
twenty dollars
It's actually called a double eagle; an eagle is a $10 coin. Current values fluctuate with the price of gold, but have been in the vicinity of $1000 as of 09/2008. If your coin has an S mint mark it will be worth about 15 to 20% more.
You tell me?
The ONLY legal 1933 double eagle sold in 2002 for $7,590,020.00
The 1895 Double Eagle is common date coin, retail values are $1,450.00-$1,650.00 for circulated coins.
twenty dollars
Maybe 5 dollars retail
It's actually called a double eagle; an eagle is a $10 coin. Current values fluctuate with the price of gold, but have been in the vicinity of $1000 as of 09/2008. If your coin has an S mint mark it will be worth about 15 to 20% more.
You possess a Coronet Head $20 Double eagle gold coin - if this coin was minted in 1903 and is in very fine condition (VF20), its value is: $1200.
Wow! - if you possess a 1854 $20 Coronet Head Double Eagle gold coin, its value in very fine condition (VF20) is worth: at least $1200.
You have a Coronet Head $5 Dollar Half Eagle. If it has a (CC) Mintmark and in good condition it could be worth thousands. Double Eagle = $20 Eagle = $10 Half Eagle = $5 Quarter Eagle= $2.50
As a copy, it's worth next to nothing.
Twenty
Um, no such coin exists. Double Eagles refer to $20 gold coins which were last minted in 1933 (1932 for circulation issues) there is no such thing as a silver double eagle. You may, however have an Eisenhower dollar which unless it has an "S" mintmark, does not contain any silver and is not worth any more than $1.