All true there was a series of 2008 and 2012 100 Kina notes issued, and they were demonitised due to that reason and counterfeits.

This is one of the 100 Kinas, the black symbol at bottom left denotes it, they have a few dollars worth and are collectable, but not spendable.
The 20 kina look like standard 20 Kina - for a photo of one, the March or April 2025 acquisitions thread shows one given away in a Magazine that gives away very cheap items.
Its a shame, as they are very pretty banknotes. The Kina also dropped to 35 NZ cents (25 US cents) at one stage but is now around 45 NZ cents (28 US cents). In 1975 when the Kina came out, it was at par with the US dollar.
PNG has always been a poor country and one of the most unexplored in the world, possessing some 600 different languages, most people speak Pidgin, a mix of Melanesian and Papuan peoples. The former live on the coasts and outlying islands like Bougainville (Likely to be independent soon), New Britain, New Ireland and the coasts of Papua. They are basically the political elite too, Papuans on the other hand mostly live inland and in the mountains, they have some of the most amazing and diverse cultures on earth.
Don't let these put you off Papuan currency. Its beautiful - look at these notes! And they are quite cheap too.

10 Kina - 1988

50 Kina - 1989 - look at all those artefacts! Man shown is Sir Michael Somare, one of the first Prime Ministers and the government building in Federal Area - Waigani (Near the capital Port Moresby).
I love coins. Especially silver, gold and anything really old.
Member of the Royal Numismatic Society of New Zealand and the Auckland Numismatic Society