The Cook Islands, a sovereign state in free association with New Zealand, uses two official legal tender currencies. The New Zealand Dollar circulates in parallel with the local Cook Islands Dollar; at the same time, the government also authorises many legal tender coins in the Cook Islands Dollar currency for collector's purposes.
Collector coins are dedicated to historical or general popular culture themes not related to the country itself. Many of them are in standard bullion sizes, including the large five ounces of silver format - such as this coin.
This coin is part of The 7 Summits collection. The seven summits are the highest mountains on each of the seven continents and enthralling subjects of one of CIT Coin Invest’s series, which displays the peaks in topographic detail from an unusual bird’s eye perspective in solid 5 ounces of fine silver. The coins are in Ultra high Relief (UHR).
The Mint says about the coin:
The seven summits have featured on several coin series over the years including CIT’s Mountains and Flora coins. At ANA 2016 however, CIT launched the highly exclusive and limited "The 7 Summits" coin collection, which for the first time presents the seven peaks in breathtaking topographic smartminting relief detailing every mountain and valley in five ounces of fine silver.
Successor to the series initiator "Denali" is Mount Everest, the world’s highest and most famous peak. Minted in highly detailed, three dimensional topographic relief with a refined selective colour application that accentuates the mountain ridges and valleys, "Everest" is a breathtakingly beautiful and fascinating numismatic work of art. | 
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