Just Started Looking Through Some Kiwi Coins 20 Cent

Good start. You have all the modern 20 cent coins except 2020 and the 2014 wide date.

My threads explain them more, they are on this part of the boards.

The Waitangi dollar is a common NCLT coin. It shows Treaty House in the Bay of Islands, where the treaty was signed, it was also a year in which the Queen visited New Zealand and the Treaty House.

Back when NZ and Australia had coins of exactly the same specifications, Australian coins turned up in change in NZ far more often and NZ coins turned up in change here. Anyone who lived in New Zealand prior to 2006 is going to have received Australian coins in their change, quite regularly.

There's far less scope for co-circulation these days, with NZ coins all different sizes and compositions now. The old NZ 20 cent coins no longer circulate at all.

If I had to guess, I would guess that Australian 10 cent pieces might still regularly turn up in change, as they are near enough in size to a current 50 cent piece. And I imagine that getting a foreign 10 cent piece when you hoped to get a 50 cent piece is cause for considerable anguish and frustration. But Australian 20 cent pieces in change should now be a thing of the past, as they are not similar in size/composition to any current NZ coin.

New Zealand coins only 5 and 10 cents found in circulation

Good to see that the modern NZ 20's have a point of difference from the Aussie coins. They look great.
And nice half crowns there Allcoinage
Oh, I do like the NZ half crown. What a neat looking coin. A fusion of symbolism.
I want some. I need to research them, though I'm sure Princetane will have all of the info.

whoa...what 1998 5c coin?....did I miss something

No water?...