The coins are manufactured to have a very high quality mirror finish on the flat surfaces. There will be no dents, scratches or nicks on the coin.
It is extremely unlikely that you will get a Proof coin in your change since, at their time of sale, they are worth much more than the face value.
Proof coins are sold in some sort of packaging to protect the finish of the coin.
The packaging will have a reference to the coin(s) being "Proof".
It would depend on the year, denomination and type of coin.
Most New Zealand silver Proof coins are sterling silver containing 92.5% silver.
A New Zealand 1983 One Dollar coin (Proof in silver)(Royal Visit), in absolute mint condition and packaging, could fetch up to $40.00 NZD. There were 17,000 minted. A New Zealand 1983 One Dollar coin (Proof in silver)(50th Anniversary), in absolute mint condition and packaging, could fetch up to $30.00 NZD. There were 17,000 minted. A reputable coin dealer will be able to give a more accurate valuation.
It is fairly easy. Apart from the dimensions, they are nothing alike. The British coin has GEORGIVS VI D : G : BR : OMN : REX on the front. The New Zealand coin has GEORGE VI KING EMPEROR on the front. British coins do not have the country name on them. The New Zealand coin has NEW ZEALAND on the reverse.
The New Zealand 5 cent coin was withdrawn and demonetised on the 1st of November, 2006. All New Zealand pre-2006 5 cent coins are no longer legal tender, but they are redeemable for face value at the Reserve Bank of New Zealand. Unless they are part of a Proof or uncirculated mint set or are individual Proof or uncirculated coins and in absolute mint condition, they are worth 5 cents.
There was no New Zealand 1958 Proof set issued.
Yes, New Zealand issued both "Uncirculated" and "Proof" coin sets in 1974. The coins were all cupro-nickel except for the 1 and 2 cent coins which were bronze.
New Zealand has never issued a 20 Shilling coin.
New Zealand one-dollar coin was created in 1991.
Such a coin does not exist. The New Zealand 1 cent coin was first issued in 1967.
Such a coin does not exist. The New Zealand 10 cent coin was first issued in 1967.
A New Zealand 2006 50 cent coin, uncirculated and in absolute mint condition could fetch up to $2 NZD. There were 70.2 million minted. A reputable coin dealer will be able to give a more accurate valuation. These coins are still in circulation so, unless they are part of a Proof or uncirculated mint set or are individual Proof or uncirculated coins and in absolute mint condition, they are worth 50 cents.