Old coins maintained for collections must be carefully cleaned with non-abrasive materials and a solution that does not damage the metal compounds in the coin. Improperly cleaning a coin can damage it and substantially reduce its value. Specialists knowledgeable in coin cleaning can clean coins without damaging them. Most expert coin collectors advise against cleaning coins at all, as discolorations and dirt may actually increase a coin's value, explains NemisMaster.com.Know More
To avoid damaging the coin, clean off grime and dirt by soaking the coin in a solution of mild soap and distilled water. Only soak the coin; do not rub it with an abrasive material or mix it around, as this may damage a delicate coin. Use only distilled water, not treated tap water that may contain chlorine and other chemicals that can damage the metal. After bathing them, allow the coins to air dry. Never rub the coins dry with any material, as even the softest cloths can cause damage.
A heavily encrusted or corroded coin can be cleaned by soaking it in olive oil. The coins should be soaked undisturbed, sometimes for months, to remove the dirt without damaging the coin. Ultrasound machines can also be used to clean coins.Learn more about Coins & Currency
The safe way to clean coins involves washing your hands, readying the work area, preparing the cleaning and rinsing solutions, scouring the coins between your fingers and drying the coins. This process takes only a few minutes per coin. You need soap, water, two containers and a soft towel.Full Answer >
Coins can be purchased from other collectors by joining coin-collecting clubs and associations, such as the American Numismatic Association, through coin shows and through coin-collecting periodicals such as the "Numismatic News and Coin World." Coin-collector club information is available online at Coin Network.Full Answer >
Several older French coins exist, including the sou (sometimes "sols"), the ecu, the livre, and older versions of the franc and centimes. The word "sou" eventually came to mean a coin of little or no value.Full Answer >
You can identify all but the most worn old coins by comparing their characteristics to images and attribute listings of old U.S. coins. Coins vary by size, weight, color, edging, engraving and composition. Isolating the key attributes can help you identify the coin.Full Answer >