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 or for investment.
Many of these are in standard bullion sizes, including in the small one tenth of a troy ounce of gold format (abbreviated as 1/10oz) - such as this coin.
This coin was issued to mark the Royal Wedding of Prince Harry and Meghan Markle.
The Mint says about it:
Prince Harry of Wales and Meghan Markle will celebrate their wedding on 19 May 2018 at St George’s Chapel of Windsor Castle following their engagement in November of 2017. The actress and Prince Harry started their relationship in 2016. Customarily, the Queen was delighted to hear the good news and granted her grandson royal permission to marry Meghan Markle, who will be only the second American citizen to marry into the British royal family. | 
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