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Solar System - Mercury NWA 8409...
Solar System - Mercury NWA 8409 Meteorite $1 1oz .999 pure silver coin, ultra high relief, yellow antique finish.
Beautiful second issue of the "Solar System" series. The coin depicts the Mercury surface on both sides, with a concave shape and the insert is a real piece of the NWA 8409 meteorite.
The coin is housed in a prestigious wooden box with COA. Extremely low mintage of 686 pcs.worldwide.
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|Face Value :||1 Dollar|
|Metal :||.999 Fine silver|
|Weight :||1 oz|
|Size :||38.61 mm|
|Quality :||Proof antique finish|
|Mintage :||Only 686 pcs. worldwide|
|Series :||Solar System|
|Certificate of Authenticity :||Yes|
|Original ETUI box/case :||Yes|
Mercury is the smallest planet in the Solar System and the one closest to the Sun, with an orbital period of about 88 Earth days, which is much faster than any other planet in the Solar System. Seen from Earth, it appears to move around its orbit in about 116 days. It has no known natural satellites. It is named after the Roman deity Mercury, the messenger to the gods.
Partly because it has almost no atmosphere to retain heat, Mercury's surface temperature varies diurnally more than any other planet in the Solar System, ranging from 100 K (−173 °C; −280 °F) at night to 700 K (427 °C; 800 °F) during the day in some equatorial regions. The poles are constantly below 180 K (−93 °C; −136 °F). Mercury's axis has the smallest tilt of any of the Solar System's planets (about 1⁄30 of a degree). However, Mercury's orbital eccentricity is the largest of all known planets in the Solar System. At aphelion, Mercury is about 1.5 times as far from the Sun as it is at perihelion. Mercury's surface is heavily cratered and similar in appearance to the Moon, indicating that it has been geologically inactive for billions of years.
Cost retail 2500€ for 1 gram. On each coin is a piece of meteorite NWA 8409 in value of 50€.
Next coins in the series: 2017 Mars, 2018 Earth.
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