THIS IS MONTANA NATURAL NUGGET MADE BY MOTHER NATURE. IT WEIGHTS 8.621 GRAMS. I PURCHASED IT FROM AN OLD GENT YEARS AGO IN BUTTE MONTANA IN A GOLD AND COIN STORE. HE DIDN'T KNOW IF IT CAME OUT OF THE OPEN PITT MINE IN BUTTE, BUT SAID HE DOUBTED IF IT DID. IT IS SMOOTHED ON THE OUTER EDGES WHICH INDICATES IT HAS HAD WATER ACTION, AND THAT MEANS ITS HAD TO HAVE BEEN IN A RIVER. TOTAL LENGTH APPROX. 1 1/4 IN. WIDTH APPROX. 1/2 IN. THICKNESS APPROX. 3/16TH IN. A CHOICE OF ***ONE COIN*** UNCIRCULATED-BU YEARS 2013 THRU 2016 1 OZ. AMERICAN EAGLE DOLLAR, .9993 % FINE SILVER COMES WITH THE PURCHASE. LET ME KNOW WHICH YEAR COIN YOU WOULD LIKE. THANKS.