The Bicentennial Washington Quarter features a 1776-1976 dual date on the obverse and a colonial drummer on the reverse of the coin to celebrate the 200th anniversary of the United States of America and the signing of the Declaration of Independence. Here is your chance to own a genuine legal tender BLACK RUTHENIUM / COLORIZED EDITION 1976 Washington Bicentennial Quarter. The coin is coated with Black Ruthenium, which is a type of platinum metal that looks like a dark platinum, but is 100 times Rarer. Ruthenium is a chemical element with the symbol RU & Atomic # 44. It is a rare transition metal belonging to the platinum group of the periodic table.