Niue 1 dollar 2021 Solar System NEPTUNE - 1 oz silver coin

The last silver coin of the Czech Mint from the Solar System series is dedicated to the planet Neptune.

After the discovery of Uranus, astronomers began searching for other planets and found one in the 19th century. The last planet of the solar system, which is also the last gas giant, was named after the Roman god of the seas. Neptune gets only minimal heat from the 4.5 billion-kilometre distanced sun, but it generates its own, which then powers stormy weather systems. Neptune's winds are the strongest in the solar system - blowing at 2,400 kilometres per hour, more than twice the speed of sound. The planet has no shortage of rings, though they are very thin, and Triton stands out among its moons, which experience gas and dust eruptions.

• Coin Metal: 999 Fine Silver
• Coin Weight: 1 oz
• Coin Finish: Proof, smartminting technology
• Coin Diameter: 37mm
• Coin Denomination: 1 dollar
• Year of Issue: 2021
• Coin Mintage: 800
• Country of Issue: Niue