Old-style $1 coins (1978 and earlier) are 38.1 mm in diameter; while new (1979 and later) ones are 26.5 mm.
Multiply those diameters by pi (about 3.1416) to find the circumference.
A US dollar coin dated 1797 is a Draped Bust dollar. If you actually have a dollar coin dated 1797, take it to a coin dealer for an accurate assessment. The coin is rare.
An average coin would be about a dollar in a coin shop, and 5 for a very good one.
1 dollar
Dollar coins are larger in size and amount.
Then that coin is a error and is worth a whole lot more than a dollar First look at the edge of the coin for the date & mintmark.
A half dollar coin weighs 11.34 grams and a dollar coin weighs 8.1 grams so if you use subtraction then the answer would be 3.33.
If the coin does have a mintmark it would be under the "DO" in dollar on the back of the coin.
A 100 cent coin would be a dollar.
The value of a dollar coin would depend upon the date it was minted, the mint mark and the condition of the coin.
There is no such thing as a British 20 dollar coin. If you have a 20 dollar coin it must come from some other country (or even British colony)
It is a coin worth one dollar.
If you mean a coin? The 1972 dollar coin is an Eisenhower dollar.
no they have a 2 dollar coin!
The coin is a Sacagawea dollar.
2 dollar coin.
Yes a dollar coin can be chaned into a dollar because i tried it before
Australia did not have a Dollar coin in 1944. Decimal currency was introduced in 1966 and the paper Dollar note was replaced with a Dollar coin in 1984.