With US rare coin values in particular, you need to know what you have and consult a US coin price guide if you want to sell. Rare coins have the highest value of course due to their rarity. Rarity in the coin world is actually on the supply side of economics. To sell your COIN VALUE half dollar 1957, you have two main options. The best way for you to get in touch with a good old coin value appraiser is to request for referrals from friends and family members who are also into collecting antique coins.
Coins of interest to collectors often include those that circulated for only a brief time, coins with mint errors and especially beautiful or historically significant pieces. Coins are generally composed of at least one type of metal, and that metal has a market value. Coins produced at the Denver or San Francisco mints tend to be more rare, because Philadelphia produced many more than any other.
Price and value aren’t always the same. An accurate US coin price guide is essential, especially if you talk to several different dealers. The price for coins is currently changing on a nearly day to day basis and the trend is that collectible United States Coins are increasing in value! Updates to the online coin price list will be completed soon, more current pricing information will be added during 2011.