hi i am khan from hyderabad well i am interested in having old coins but the coin should have a little r.p in it as u can test it well put some rice inches far from the coin and test it wether the coin is catching the rice or not keep it nearly 15 to 20 minutes if do so i can purchase it easily or else if ur having any old copper metal things which is catching the rice i can sell it on the best ever price u can call me on my number 09533044161