Hello, Kristina --

The values of your coins will depend on their condition and their mintmarks (or lack thereof), but I can tell you that an 1858 Liberty Seated without a mintmark (made in Philadelphia) and with an average amount of wear is worth about $25 to $30.

The value of your 1921 dollar depends on if it has a depiction of Miss Liberty with curly hair or with a crown of rays, like the Statue of Liberty. The curly-haired 1921 Liberty dollar (known also as a Morgan dollar) is worth about $17 to $20 and the 1921 dollar with Miss Liberty with a crown of rays is worth $75 to $100.

I believe the 2004 silver coin you reference is an American Silver Eagle, and it's worth about $18 with current silver values.

Best wishes,
Josh