The coin is a 1/10 oz gold bullion coin. The $5 denomination is artificial. Its value is tied to the spot price of gold which changes every day; check a site such as kitco.com or CNNMoney for the most up-to-date quotes.
a dollar
value of 1845 us five dollar coin
It's a common dollar coin that's face value
There was no fifty dollar US gold coin produced in 1940.
One dollar.
Check that coin again. The U.S. has never minted a two dollar coin.
$1.00
Approximately One dollar
Check that coin again. There was no such thing as a US dollar (or the United States) in 1756.
A pewter coin is also known as a Continental dollar. Depending on the condition of the coin, the value of an original pewter dollar could be as little as 1,000 US dollars to 15,000 US dollars.
72.90
Look at the back of the coin for "HALF DOLLAR" no US dollar coins were struck after 1935.