This is the smallest coin that I have in my collection. Made from aluminium so weight is practically nothing ;-)
Also was not sure if this is genuine as initially avaliable only from chinese sellers and no information about this coin in any source, but I bought it as the price with shipping was only few dollars.
Seems that there is no other coin in series, only this one 1c. The coin can be ofiicially approved by Cook Island, I guess... in history there were a lot of silver coins with very local subject (for example typically Polish) issued by local mints and these coins were oficially approved by Cook Islands.