The value of a silver dollar can fluctuate do a variety of different factors. The spot price of an ounce of silver is probably the biggest factor involved in a value change. Increased demand for a particular date or grade of any coin is also a factor.
Excluding silver price, some silver dollars don't go up - or down - in value at all.
what is the current value of an 1878 silver dollar
It depends, this silver dollar, which since you say has a "D" on it, which means it is a Morgan Dollar, is not worth much over its bullion value in this condition. As the price of silver has risen (about $35 per ounce as I write this), the silver value has now exceeded its numismatic value. Keep in mind that a silver dollar is NOT one ounce of silver. The coin is 90% silver and has 0.77343 of silver in them
The coin is not a silver liberty dollar. It's a 1979 Susan B. Anthony Dollar coin and has no silver in it and the value is one dollar.
$35
Depends on what you want to know for. Some collectors will pay more than the $15 you could get for the silver content. Technically the silver dollar is worth about $30, but not many will pay that much. Might be an anomaly on it somewhere which raises value. If you're talking about the Kennedy half dollar, it is worth half as much for the silver value, maybe 3/4ths of the silver dollar. Not worth much to a collector.
That depends. If it is a regular dollar made for circulation it contains no silver and is worth face value. But if it's a collectors silver dollar in witch case it should say something like .999 silver then its worth its weight in silver, value changes with the silver market.
The coin is only 40% silver and has a value of $2.73 only the 1964 Kennedy half dollar was 90% silver.
If you look on the back it's a HALF dollar, not a dollar. Value is about $2.00 for the silver content.
A 1999 1oz silver dollar may be worth up to $50. The value is based on the value of silver at the time of sale. The price of silver changes nearly by the minute.
The value is just for the silver, about $30.00.
These coins contain no silver and are worth only face value.
The 1979 one dollar coins DO NOT CONTAIN SILVER and are still in circulation today with a value of one dollar.