A friend of mine got one of the twelve black balls dogged in the mountain. It was as big as a mangosteen fruit and covered by a black hardened paste. When they peeled it off, a silvery metal remained as big as pingpong ball and weighed 200 grams. It reamined cold though heated in one hour. When hammered with 12pound hammer it do not brittle or deform. It bubbles in ice and remain it's coldness longer. The one who found it was not aware that there could be markings in it until they hammered it a lot of times, and so no marking could be found anymore. He wanted to sell it but do not know how. Could you guys help us or any interested buyer.