Copper/Silver/Gold Medal of The Sport Index, Inc.,Chicago, Illinois., Dayton, Nevada. 2014.52.1

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Obverse: +π/ –3.14∞/ SERIES A · NET ZERO COIN - Bull and bear with arrows pointing up and down
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Reverse: NET ZERO COIN/ ANTIKYTHERA MECHANISM · A.D. 2014 - Image of Antikythera mechanism