2018 Niue Space Invaders 1oz Silver Proof Coin. 2019 Niue Tetris 1oz Silver Proof Coin. 2020 Niue Mortal Kombat 1oz Silver Proof Coin. I haven’t checked if another issue will be released of a classic video arcade game, but I do hope so. These are really cool and well made. I’m looking forward to Centipede, Frogger, Defender, and Donkey Kong, but probably just dreaming. Highly recommend grabbing a set before prices go insane on this series. Generic/Stock Photo(s) Used. The item “2018-2019-2020 Niue Space Invaders, Tetris, Mortal Kombat 1oz Silver Proof Coins” is in sale since Monday, April 5, 2021. This item is in the category “Coins & Paper Money\Bullion\Silver\Coins”. The seller is “baybiz384″ and is located in Defiance, Ohio. This item can be shipped to United States.

• Country/Region of Manufacture: Niue
• Certification: Uncertified
• Precious Metal Content per Unit: 1 oz
• Strike Type: Proof
• Year: 2019
• Composition: Silver