Unlisted Cook Island 5 dollar gold coin. [solved]

I have a 5 dollar gold coin from the cook islands that is not listed. It honors the WW2 Finnish general Mannerheim, here are some pictures of the coin. 

And here is a link to a store page about the coin.  https://en.jncoins.com/product/14757/cook-5-dollars-2019-mannerheim--proof--au-05g-999

You can add the coin yourself. There is a link at the bottom of every search result:

A coin is missing in the catalog? Add it yourself!

Look at other 5 dollar Cook Islands gold coins for examples of how to fill out the fields.

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