Cleaning of Coins

Take 5% of FORMIC ACID add it with 95% of Water and prepare the solution keep it for half an hour in solution after that remove and wash it from water with the help of brush. After this process use POLYVINYLE ACETATE and apply on the coin and keep it for dry and keep in album.

CLEANING DIRTY COINS :
The collector should take great care in the cleaning of the coins. The coins should never be cleaned if one is not sure about the process/result of cleaningespecially with any chemical or wire brush. The coins should be cleaned as under :

(a) Silver Coins may be cleaned with soap or tooth-paste and rubbed between the thumb and the index finger.

(b) Copper, brass and bronze coins should be dipped in sour curd (Khatta dahi) and rubbed with soft tooth-brush. The coins can also be cleaned in Tamarind (Imli) and later and Lemon juice diluted with water.

(c) Copper and Bronze coins may have greenish deposit (Patina) on them. These can be cleaned by dipping them in coconut or seasame oil and rubbing with hard tooth-brush. Tamarind water or Lemon juice can also be used. Any edible oil may also be applied to all obsolete copper; Bronze and Brass Coins, for protecting them from the greenish deposit. However nothing should be applied to UNC coins.