There were no Scottish coins minted after the union of Scotland with Britain in 1707. The UK issued and used a common coinage.
There were was no Australian 1956 Halfpenny minted.
The last Australian Halfpenny was minted in 1964.
The last Australian Halfpenny was minted in 1964.
There was no 1948 New Zealand Halfpenny minted.
There were no 1832 British Halfpennies minted.
There were no 1830 British Halfpennies minted.
There were no Australian 1937 Halfpennies minted.
An Australian 1964 bronze Halfpenny (Elizabeth II)(minted in Perth - mintmark = Y.), uncirculated and in absolute mint condition could fetch up to $5 AUD. If it has been circulated but still in good condition, it might fetch anything from $0.30 to $1.50 AUD. There were 18.23 million minted. The 1964 Halfpenny was the last to be minted prior to the introduction of Decimal Currency. A reputable coin dealer will be able to give a more accurate valuation.
There were no Australian Halfpennies minted from 1956 to 1958 inclusive.
There were no British Halfpennies minted from 1828 to 1830 inclusive.
There were no 1943 New Zealand Halfpennies minted.
There were no Australian Halfpennies minted from 1956 to 1958 inclusive.