The Morgan, Peace and Liberty Seated dollars back to 1840 contain .77344 troy ounce (ASW) actual silver weight of pure silver. The silver-clad Eisenhowers in official mint sets and proof sets from 1971 to 1976 contain .3161 troy ounce (ASW). The Trade Dollars of 1873 to 1885 had .7874 troy ounce (ASW). I believe the very earliest US Silver dollars had a bit more, too, but don't have the numbers handy.
If you're referring to modern "silver eagle" coins that have a denomination of $1, these are actually bullion coins sold to collectors and investors and not for spending. They contain 1 oz of .999 fine silver.
*******
[*As a rule the composition of the US Silver Dollar is 90% silver and 10% copper]. Precious Metals are generally referred to in troy ounces and (ASW) actual silver weight.
Other years shown above have a different ratio of silver/copper
*Source: http://users.hal-pc.org/~canupnet/silverdollars.html
#One Avoirdupois ounce = .9116 troy ounce
#Source: http://www.onlygold.com/tutorialpages/conversion_tables_FullScreenView.htm
.76 troy ounces
There is 24 grams of silver in a 1891 US silver dollar.
what is the current value of an 1878 silver dollar
The coin has .77344oz of pure silver.
1 dollar
All US silver one dollar coins from 1840 to 1935 contain 0.77344 troy oz of pure silver, alloyed with 10% copper for hardness.
There is 24 grams of silver in a 1891 US silver dollar.
There is no silver in a 1972 US half dollar.
There is around .77 ounces in a 1921 US silver dollar.
A US silver dollar from 1840 to 1935 contains .77344oz of pure silver.
The amount of pure silver in the 1922 Peace dollar is .77344oz, all US silver one dollar coins from 1840 to 1935 have this much silver in them.
The amount of pure silver in the 1925 Peace dollar is .77344oz, all US silver one dollar coins from 1840 to 1935 have this much silver in them
what is the current value of an 1878 silver dollar
There are .1479 troy ounces of silver in a 1967 US Kennedy half dollar.
The coin has .77344oz of pure silver.
1 dollar
There are .3617 troy ounces of silver in a 1958 Franklin half dollar.
$25.