New Zealand Coinage Specifications

On 31st July 2006, the Reserve Bank of New Zealand introduced a new set of smaller and lighter coins to replace the existing 10, 20 and 50 cent pieces. The 5 cent piece was phased out of circulation, while recovery of the old coinage began.

Schedule of New Zealand general circulation coinage - after 31 July 2006

2006 coins: 10, 20 and 50 cents, plus 1 and 2 dollar

Ten cent coin

Alloy: plated steel

Diameter: 20.5mm

Weight: 3.30g

Design: A Maori carved mask or koruru with Maori rafter patterns.

Edge thickness: 1.58mm

Edge treatment: Unmilled

Twenty cent coin

Alloy: plated steel

Diameter: 21.75mm

Weight: 4.00g

Design: A Maori ‘pukaki' carving. The edging on this coin is distinctive and known as ‘Spanish flower'.

Edge thickness: 1.56mm

Edge treatment: Spanish flower (7 indents evenly spaced.)

Fifty cent coin

Alloy: plated steel

Diameter: 24.75mm

Weight: 5.00g

Design: The barque Endeavour, commanded by Captain Cook, sailing south, with Mount Taranaki in the distance.

Edge thickness: 1.70mm

Edge treatment: Unmilled

One dollar coin

Alloy: Aluminium-bronze

Diameter: 23 mm

Weight: 8.0g

Design: New Zealand's national bird, the Kiwi.

Edge thickness: 2.74mm

Edge treatment: Intermittent milling

Two dollar coin

Alloy: Aluminium-bronze

Diameter: 26.5 mm

Weight: 10.0g

Design: The kotuku (white heron) is one of New Zealand's rarest birds and is held in particularly high regard in Maori mythology.

Edge thickness: 2.70mm

Edge treatment: Grooved

Schedule of New Zealand general circulation coinage to 31 October 2006

5 cent coin

Five cent coin

Alloy: Cupro-nickel

Diameter: 19.43mm

Weight: 2.83g

Design: The last surviving member of an otherwise extinct family of reptiles, the tuatara, native only to New Zealand, is shown sitting on a coastal rock.

Edge thickness: 1.24mm

Edge treatment: Fully milled

10 cent coin

Ten cent coin

Alloy: Cupro-nickel

Diameter: 23.62mm

Weight: 5.66g

Design: A Maori carved mask or koruru with Maori rafter patterns.

Edge thickness: 1.70mm

Edge treatment: Fully milled

20 cent coin20 cent coin

Twenty cent coin

Alloy: Cupro-nickel

Diameter: 28.58mm

Weight: 11.31g

Design: There are two designs in use. One features a representation of a well-known Maori "pukaki" carving. The other design in common usage features the kiwi.

Edge thickness: 2.22mm

Edge treatment: Fully milled

50 cent coin

Fifty cent coin

Alloy: Cupro-nickel

Diameter: 31.75mm

Weight: 13.61g

Design: The barque Endeavour, commanded by Captain Cook, sailing south, with Mount Taranaki in the distance.

Edge thickness: 2.33mm

Edge treatment: Five equally spaced plain segments separated by milling.

1 dollar coin

One dollar coin

Alloy: Aluminium-bronze

Diameter: 23 mm

Weight: 8.0g

Design: New Zealand's national bird, the Kiwi.

Edge thickness: 2.74mm

Edge treatment: Intermittent milling

2 dollar coin

Two dollar coin

Alloy: Aluminium-bronze

Diameter: 26.5 mm

Weight: 10.0g

Design: The kotuku (white heron) is one of New Zealand's rarest birds and is held in particularly high regard in Maori mythology.

Edge thickness: 2.70mm

Edge treatment: Grooved

For more precise details concerning the above specifications on New Zealand coins please contact us at:

Currency & Building Services
Reserve Bank of New Zealand
P O Box 2498
2 The Terrace
Wellington
New Zealand

Freephone in NZ (0800) 426-467 (Option 1 or 2)
Phone +64 4 472-2029
Fax +64 4 471-0313
E-Mail collectors@rbnz.govt.nz