An extremely rare 1885 Trade Dollar is expected to sell for up to $2 million when it is auctioned next month. ... an extremely rare half-dollar coin from 1838 was sold at auction for $504,000.

All dollar coins are worth at least a dollar, which is known as their face value. Some are worth many times that, however. These are six of the rarest silver dollars and their values.

One (1) dollar coin United States, 1884 Obverse Image: Left-facing Liberty wearing a headband, crown of cotton and ... Reverse Text: UNITED STATES OF AMERICA / IN GOD WE TRUST / ONE DOLLAR / O ...

If you're hanging on to a $1 coin, it might be worth much more than it appears.. Here are four ways to check if your coin can be sold for almost $14,000, according to financial review site Tododisca.