What is the value of an 1828 US silver dollar?

Answer 1

The U.S. did not mint any $1 coins for circulation from 1804 to 1835 inclusive. Please check again and post a new question.

If the coin does say that it is a $1 piece with that date it is not genuine.

I am not aware of a Silver Dollar that was minted in the year of 1828. The Heraldic Eagles were minted in the years 1798 through 1804; the Gobrecht Dollars were minted from 1836 through 1839; and the Liberty Seated Dollars were minted from 1840 thrugh 1873.