A New Zealand 1947 bronze Halfpenny (George VI), uncirculated and in absolute mint condition could fetch up to $50 NZD. If it has been circulated but still in good condition, it might fetch anything from $1 to $10 NZD.
There were 2.726 million minted.
A reputable coin dealer will be able to give a more accurate valuation.
New Zealand has never issued a silver Halfpenny. Somebody has possibly silver plated it. Modified coins have no collector value.
There was no 1948 New Zealand Halfpenny minted.
Nothing. Whatever value the coin had as a collectible vanished when the coin was modified.
The last New Zealand Halfpenny was minted in 1965. New Zealand converted to decimal currency in 1967.
The last New Zealand Halfpenny was minted in 1965. New Zealand converted to decimal currency in 1967.
There were no 1943 New Zealand Halfpennies minted.
The first New Zealand Penny and Halfpenny was issued in 1940.
You will find most the answers to New Zealand coin questions already on WikiAnswers if you use the format - What is the value of a 1954 New Zealand Halfpenny etc.
There was no 1947 New Zealand Crown (Five Shillings) minted. New Zealand Crowns were only minted in 1935, 1949 and 1953.
Please check your coin again and post a new, separate question. New Zealand's first halfpennies were minted in 1940.
Such a coin does not exist. The last New Zealand Halfpenny was minted in 1965 and only Britain produced a "Half New Penny" coin.
The New Zealand Penny and Halfpenny were made from bronze consisting of 97% copper, 2.5% zinc and 0.5% tin.