It's priceless, both spiritually and physically. :)
1$
1000,000,000,000,000,000,000,000,000$
The golden buffalo is worth $50.
That depends on the mint mark, purity, condition, rarity, age and size of the coin.
One dollar.
It's a modern presidential dollar coin from 2007, and is worth one dollar.
Those are the years George Washington was President. If the coin is slightly larger than a quarter, and golden in color, then it's a 2007 presidential dollar coin worth one dollar.
A modern one dollar coin contains no real gold at all and the melt value of the coin is currently around six cents. As long as this coin is in circulation it will continue to be worth exactly one dollar.
The coin (assuming it is a US coin) is only worth 1 cent. Either the coin was chemically treated to make it look gold or it was gold plated. Either way, it is not worth any more than one cent.
If it's golden in color and has the Statue of Liberty on the back, it's a 2011 presidential dollar, worth one dollar.
If the coin is golden and slightly larger than a quarter, and says 1974-1977, then it's a dollar coin from 2016, and it's worth one dollar.