Which New Zealand coins are best for hammering?

I live in Auckland, New Zealand. This in itself is awesome, but the only problem is that most Instructables like this or this call for American currency, and I seem to be running out of it. My options are to go to America again, or to find an NZ alternative. Obviously the latter is cheaper, so I was wondering which of our coins to use.
Anyone?

caarntedd6 years ago
1966 Australian 50c piece. ( The round one). 80% silver. Probably the easiest and cheapest to get hold of in this part of the world. If you don't mind spending a couple of bucks, just go to a coin dealer and see what they have. A silver coin from anywhere in the world in poor condition couldn't be too expensive.
rickharris6 years ago
http://en.wikipedia.org/wiki/Coins_of_the_New_Zealand_dollar

Nickel-plated steel
10 c 20 c 50 c Not so good for shaping.

Aluminium bronze
$1 $2 may /should be better

Any of the metal ones should work. Just don't try those ibles with the wooden nickles, the splinters hurt like crazy! =P
Kiteman6 years ago
Check your pocket change - which coins seem to collect the most nicks and small dents?

They are the most malleable, so try those.