The Universe series is dedicated to the most important cosmic phenomena of the universe. This dome-shaped coin has a mintage of 500 coins. Contains 2 oz of. Mintage of only 500 coins. Comes in a box along with a certificate of authenticity. Obverse: A profile portrait of Her Majesty Queen Elizabeth II and the constellations in the Milky Way. The inscriptions include the issuing country, year of issue and the face value. Reverse: Features in color an image imitating the appearance of the Milky Way. In the center of the coin is a genuine meteorite. The fluorescent printing makes the coin glow in the dark. Sovereign coin backed by Niue government.