It depends on the copy. A copy coin could have either no gold content or it could be pure gold, it is impossible to say because there is no regulation on copy coins.
Will copy.
Carbon Copy Carbon Copy
Future tense can be one of the following: going to + verb = going to copy -- I am going to copy my sister and get married when I am 35. will + verb = will copy -- I will copy the recipe for you later. be + present participle -- am/is/are copying -- She is copying her passport for the travel agency.
carbon copy, meaning sending the same thing to another person. cc = carbon copy bcc = blind carbon copy
Fantasy coins of this type only have value if they are made of silver, base metal copy's are almost worthless.
It likely has only a very thin layer of gold over the base metal it's made of. Take it to a jewler to be sure, but this stuff is basically worthless.
Private mints oftentimes have coins in different materials than what they advertise, but from what I can tell, the majority of National Collector's Mint double eagle "coins" are base metal (I'd assume either copper, steel, aluminum, nickel, zinc or some alloy of them) with a tiny amount of gold plating.
Being that it's a copy, it's NOT real money, and cannot be spent as such.
The first St. Gaudens double eagles were released in 1907, so a 1904 St. Gaudens coin is not possible. Please check your coin again. If you have a 1904 double eagle with a Liberty head design, it's worth between $1000 and $1100 depending on how worn it is. If you have a different date with the St. Gaudens Standing Liberty design, please post a new question with that information. Copy each of these links into your browser to see images of each design: http://coinfacts.com/double_eagles/liberty_with_motto_double_eagles/1904_liberty_head_double_eagle.htm http://coinfacts.com/double_eagles/saint_gaudens_double_eagles/1910_saint_gaudens_double_eagle.htm
Maybe 5 dollars retail
A copy of any US coin has no true value aside from that of the metals used to make it.
These copy's of the 1933 Double Eagle have no numismatic collectible value, most sell for $5.00 or less at coin shows.
There are copies made for nearly every date/mintmark collection for US coins. Some are well made and meant to fool collectors, others are clearly marked COPY and designed to be a space holder for collectors who can't afford the original coin and still others are contemporary counterfeits (and contemporary counterfeits are usually collectible) and these were designed to pass for $20 back in 1931 and were usually gold plated.
Being that it's a copy, it's worth next to nothing. It's gold-plated base metal.
The only legal example sold for $7,590,020 in July of 2002. Many copy's of this coin exist that have no collectible value.
That's really an open-ended question. It could look like whatever double eagle that's being copied - Liberty Head or St. Gaudens, or it could be a fantasy piece or bad fake that doesn't resemble any known coin. If it's a legitimate replica not intended to be passed off as a counterfeit, it would look very much like a genuine double eagle but would have the word REPLICA or COPY worked into the design somewhere, as required by law.
These copy's of the 1933 Double Eagle have no numismatic collectible value, most sell for $5.00 at coin shows.