There are two issues with this question.
- We have a policy of not answering questions like "what is this worth" here. In most cases, you would need to have an expert on the type of item in question look at it and give you a reasonable price. We could possibly give you a rough estimate, but without seeing it, we might be very, very wrong.
- You didn't bother to give any details whatsoever about what you mean by "gold dollar coin". Is this a gold one dollar coin from 1849, or a gold (colored) one dollar coin from 2010? Without that information, even a rough estimate is impossible.
(Actually, if you mean a recent... that is, minted in the last 15 years... "gold" dollar coin, they aren't really gold, and it's worth exactly one dollar. If it's in mint condition... this does not mean "it looks really nice", but literally exactly as it came from the mint... it might be worth slightly more to a collector.)
