What is the value of an 1834 US silver dollar?

Answer 1

There were no US silver dollars minted for circulation between 1804 and 1835 inclusive. Please check your coin again and post a new question.

If the denomination is in fact $1 and the date is 1834 it's likely that you have one of the many counterfeit pieces that have been made in the Far East during the last few decades.

If the date is worn and is actually 1884 you have what's called a Morgan dollar.