1932 was the last year that US $20 gold coins (a/k/a "double eagles") were minted for circulation. Many were melted so today they're very rare, with retail prices of at least $10,000 as of 07/2013.
445,500 double eagles were minted in 1933 but the US went off the gold standard before any could be put in circulation. All but a few 1933 double eagles were melted.
A dozen or so 1933 double eagles were held back when the order to melt was given. One is preserved in the Smithsonian Institute in Washington, DC; see the link below. At the time another one was sold to Egypt's King Farouk. It was eventually seized by the US Secret Service but was released when a court ruled against the government's seizure. It re-sold for about $8 million in 2002. The remainder were secretly held by the family of a Philadelphia coin dealer until the second decade of the 21st century. The legality of their ownership is under debate at this writing; it's unlikely the family will be able to keep them.
When was the last year a $50 gold coin was made
The last silver half dollar was minted in 1969.
I'm assuming you mean the Sacajawea Dollar which is minted in gold-coloured brass (Susan B Anthony dollars were last minted in 1999) it is a common coin struck in brass and not gold and is worth $1.
No. The Peace Dollar was last minted in 1935 and the Eisenhower Dollar was not minted until 1971.
Check that coin again. The US never minted a $25 gold piece, and the last year for gold coinage was 1932.
The James Garfield presidential dollar was minted in 2011. It was the last coin in the series to be released into regular circulation.
Check that coin again. The last year gold double eagles were minted for circulation was 1932.
No such coin exists. Silver dollars were last minted for circulation in 1935, and the last silver dollar sized coin was the Eisenhower dollar of 1971-1978, there was no dollar coin minted in 1967.
1932 was the last year gold coins were struck for circulation.
Only two pieces were struck in 1877 and both are in the National collection at the Smithsonian.
The last circulating silver U.S. coin was the 1969 half dollar.
The mint mark on $20 gold coins minted from 1849 to early 1907 is located on the reverse [tails] side of the coin just beneath the eagle. The mint mark for the Saint-Gaudens $20 gold coin minted from late 1907 to 1933 is located on the obverse [heads] side of the coin just above the date.