Numismatics is one of the oldest hobbies in the world and one which is gaining new converts each year. There is also evidence to suggest that ancient Roman rulers collected coins of the classic Greek...
Coin collecting novices tend to belive that only "really rare" coins like the 1930 penny have any chance of increasing in value over the years. However, a quick comparison with prices from any old coin...
As a general rule about Cleanning coins!, Coins should not be cleaned at all as doing so may end up ruining the coin's numismatic value, As a collector I will pay a considerable premium over the catalogue...