With so many dates it's impossible to give them all values with looking at them. However these coins are silver and are worth at least $21 for their silver content.
The value of silver dollars depends on its date, mintmark, condition, the price of silver and the amount of collectors interest.
You could get around $30 for a common date in circulated condition. If it is a rare date and uncirculated you could get thousands of dollars but that is unlikely. They have a silver melt value of around $26. For a specific value, ask about a specific coin (with date and mint mark).
1967 is a common date for Canadian silver dollars, as well as the last year they were actually made of silver. It's currently worth about $18.
1922 is the most common date for Peace dollars, currently worth about $25 for the silver.
Random MORGAN dollars? All Morgans have a silver value of about $26.00 as of 3-13-11. The collectible value depends on date, mintmark, and condition.
Without a date and mintmark it is impossible to tell. The current silver melt value for 1964 90% silver half dollars is $12.34. The melt value for half dollars made between 1965-70 is $5.04. These are 40% silver. See the related links below for more information.
Current value of the silver is $15.40. Regardless of date, all Peace dollars contain .77344oz of silver.
3-24-11>>If you mean, Morgan dollars struck from 1878 to 1899 they all have a silver value of $22.00. The collectible value depends on date, mintmark & condition.
The same as they have been for a while as long as the silver price stays steady. If the value of silver goes up so will the value of Morgan dollars. If the value of silver decreases so will the value of your Morgan dollars. An average Morgan dollar can be worth anywhere from 30- 300 dollars depending on condition, date, and mintmark. Some can even be worth more. See the related link below for an online price guide of Morgan silver dollars.
1921 is by far the most common date for Morgan silver dollars. At current silver prices, one is worth about $23.
All Peace dollars are 90% silver. The current silver value is $15.28. The collectible value depends on the the date, mintmark and condition of the coin.
Morgan silver dollars were not made in 1799. Check the date and post a new question.