Go to a coin dealer or a jeweler, they have tests that will verify if the coin is gold or not.
More information is needed. What country issued the coin? Does it indicate a weight or denomination? Please post a new question with that information to help ID your coin. Thanks!
What country? What denomination? Is it real gold, or just a brass circulation piece? Please post a new question with more details to help ID it.
The U.S. never struck a $40 gold piece. You may have a privately-minted coin or something similar. Please post a new question with more details to help ID it.
That motto is on ALL British coins so it doesn't help to ID a specific coin. Please post a new question with the coin's denomination and an estimate of how worn it is.
i don't know but if anyone can tell me, id be very happy
What year? Please post a new question with that information to help ID the coin.
Silver, not gold. E Pluribus Unum, not "eplurius" (check the spelling on the coin) Plus, ALL coins have that motto so it doesn't help to ID a particular item. Presumably it IS a dollar coin, at least. In that case the gold color is because it was plated for use in jewelry or similar. That would make it an altered coin worth only its metal value, about $14 as of 08/2008
US $5 coins were made of gold, not nickel. Please check again and post a new question with more information that might help to ID your coin.
Please provide enough details to ID it. What date? What mint mark? How worn is it?
I am not sure anyone would want to willing to share there ID with anyone. Sharing information is not a safe thing to do.
Your coin may be a privately-issued piece. There are no listings for US mint coins matching that description. Please post a new, separate question with more information that might help to ID the coin.
Not enough information. What are the numbers? What design is on the coin? What kinds of inscriptions? Is it in a presentation package or just loose? It's possible you have a bullion coin, or possibly a copy of a real coin but made of base metal. Please post a new question with the above info to help ID it.