hello friends i have a coin 1843 2 anna coin function 1 ujala or ink disapears in 2 to 3.1 min when aluminium is kept with the coin fr 5 min it breaks into pieces when magnet is brought forth to it , magnet repels to 2.3 inch radius even tamrind it is always a bit hot a rudraksha bead spins on the coin it is kept in cotton with aluminium foil outdr coating plz tel me the exact price