With the price of gold and silver going up and down daily, these price changes can have a ripple effect even on coins that are not made out of gold or silver. Therefore, I have started to update all the value listings on the coins.about.com website to reflect current market conditions. Two of the most popular coin series that coin collectors assemble are the Lincoln wheat pennies and the Buffalo nickels. Additionally, I have expanded the listings to include the values for an "average" circulated and uncirculated example for each date and mint mark. I will continue to analyze the coin market and post updates for additional coin series.