The fabled 1804 dollar is arguably the most valuable coin in this series. However, in reality none were struck in 1804! You can see pictures and read a bit at the following link.
It's a half dollar not a dollar. The coin is very common, most are only valued for the silver, about $12.00
The 1962 Franklin half dollar is one of the highest mintage of the series, most are valued for the silver at about $11.00.
The coin is a 40% silver Kennedy half dollar most are valued only for the silver, about $6.00
The 1963-D Franklin half dollar is the highest mintage of the series, most are valued for the silver at about $6.00.
A 1964 US dime is so common most are valued only for the silver at about a dollar.
Which Peace Dollar is the most valuable varies depending upon the condition of the coin. It is commonly thought the 1921 and the 1928 are the most valuable. However, coins of other dates in high uncirculated grades can actually be more valuable than a 1921 or a 1928 in the same grade. For example, in MS65 the 1921 is valued at $2,100, and the 1928 is valued at $3,500 but in the same grade the 1924-S is valued at $9,500, the 1925-S is valued at $19,500 and the 1927-S is valued at $7,500. But then consider the 1934-D, in the circulated grade of G4 it is valued at $20 but in the uncirculated grade of MS67 it is valued at $80,000.
The 1957 Franklin half dollar is a very common high mintage coin of the series, most are valued for the silver at about $15.00.
The fabled 1804 dollar is arguably the most valuable coin in this series. However, in reality none were struck in 1804! You can see pictures and read a bit at the following link.
1922 is the most common date for Peace dollars, most are valued only for the silver about $30.00-$37.00
So many were made that most coins are only valued for the silver (40%) at about $3.00.
So many were made that most coins are only valued for the silver at about $2.70
Most are valued at $7.00-$8.00 if in a collectible condition, so many were made they are very common.