There was no 1948 New Zealand Halfpenny minted.
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.
New Zealand has never issued a silver Halfpenny. Somebody has possibly silver plated it. Modified coins have no collector value.
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.
Nothing. Whatever value the coin had as a collectible vanished when the coin was modified.
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.
The New Zealand Halfpenny issued from 1940 to 1965 inclusive, featured a hei tiki design on the reverse. The designer was L C Mitchell.
With the possible exception of traders tokens (with the traders business name on them), there were no "New Zealand" Halfpennies minted prior to 1940. Any Halfpennies circulating in New Zealand prior to 1940 would have been mostly British Halfpennies and some Australian Halfpennies.