I really don't know anything about coins, but I do have a very small cache of silver coins put away, and I noticed a local coin dealer is advertising on Craigslist and he is only offer 12X on the 90%. But he has always been know to buy low and sell high.
I have only been watching the markets since everything went to crap in the economy, and Gold and Silver started going up. So I am wondering for how long the market will stay up, or will it ever come down?
If it is unlikely to come down, I would consider your coins like a savings account, if it is going to continue to go up, it more of an investment with future gains....
But if it has a chance to drop again, it might be like buying stocks in Enron, and you might want to sell while it's high.
From what I understand, and it may not be much... The value on precious metals follows the economy, if the economy goes to crap, the metal values go up, and if the economy recovers, the metal prices go back to "normal".
But I don't think metal prices can crash unless the market becomes flooded, which is highly unlikely in the case of silver and gold.
In other words, I think I would save them for a future vacation like was said above me, Keep collecting, keep putting them away, and then one day go cash them all in and surprise the wife, or girlfriend, or whatever with a great trip somewhere special.