Usually face value, so what ever is imprinted on the coin is the value. Without knowing which coin, date and condition, it's impossible to supply any further info about the coin.
1 dollar
It's not a US coin. The Mint has never made a $100.00 gold coin.
How much a 1901 Magyar 2 cent coin is worth depends on the condition of the coin. In average circulated condition, such a coin is worth 1 US dollar. In fully uncirculated condition, this coin is worth 5 US dollars.
Look at the coin again, no US one dollar coins were struck in 1930.
If the coin is a modern gold bullion coin it is 1/4oz of pure gold. If it's a pre-1933 coin it has .48375oz of pure gold in it.
How much is a united states emirate coin worth in US
$1 unless it has an "S" mintmark or is in mint packaging.
Sacagawea is on the US $1 coin.
Assuming it's from circulation, £1.
It contains 1 ounce of silver.
A US "penny" is actually a 1 cent coin, worth 1/100 of a dollar. A British penny (the coin's official name) is worth 1/100 of a pound sterling.
The US $1 dollar coin dated 1979 has no silver in it, they are still in circulation if this coin is from pocket change spend it.