As a former coin dealer, I can tell you that you will be offered about 50% of list value for the coins by a dealer. It will be a good way to find out the value of the pieces without doing the hard work. If you are willing to do the work, go to Coin World Magazine and look up each piece. You will have to determine condition in order to determine the value.

Also bear in mind that the value will fluctuate depending upon whether the value of bullion is up or down that day. The premium of "coin value" will moderate these fluctuations if the coins are relatively rare and in Fine or better condition.