An Australian 1936 bronze Halfpenny (George V), uncirculated and in absolute mint condition could fetch up to $225 AUD. If it has been circulated but still in good condition, it might fetch anything from $0.75 to $22 AUD.
There were 5.577 million minted.
An Australian 1936 bronze Halfpenny (George V)(Proof), uncirculated and in absolute mint condition could fetch up to $35,000 AUD.
A reputable coin dealer will be able to give a more accurate valuation.
An Australian 1916 bronze mule Halfpenny (George V)(minted in Calcutta - I), circulated but still in good condition, might fetch anything from $48,000 to $165,000 AUD.
There were only 10 or fewer minted. Those are only known to exist in "Very Good" to "Very Fine" condition.
The mule coin shows the Indian Quarter Anna obverse and the Australian Halfpenny reverse.
There were struck on the Australian Halfpenny blank and weigh 5.68 grams.
A reputable coin dealer will be able to give a positive identification, authentication and a more accurate valuation.
If you have cleaned a coin, any value it might have had is gone.
If the coin had been circulated and had a few nicks and scratches, you might get 50 cents for it.
1916 was not a low mintage year, so in circulated condition it's worth about 50 cents to a dollar
There were was no Australian 1956 Halfpenny minted.
The last Australian Halfpenny was minted in 1964.
The last Australian Halfpenny was minted in 1964.
The last Australian Halfpenny was issued in 1964.
The Royal Australian Mint produced no Australian Halfpenny coins from 1956 to 1958 inclusive.
The Royal Australian Mint produced no Australian Halfpenny coins from 1956 to 1958 inclusive.
There were no Australian 1937 Halfpennies minted.
There were no Australian Halfpennies minted from 1956 to 1958 inclusive.
There were no Australian Halfpennies minted from 1956 to 1958 inclusive.
There is no Australian 1921 Halfpenny with a spurious "E" on it. You may have a genuine oddity. A reputable coin dealer will be able to assist with verification and give a valuation.
An Australian 1942 Halfpenny minted in Melbourne, has no mintmark. An Australian 1942 Halfpenny minted in Perth has a dot (.) after the (Y) in PENNY (PENNY.). An Australian 1942 Halfpenny minted in Bombay has an (I) below the King's head.
With the possible exception of traders tokens (with the traders business name on them), there were no "Australian" halfpennies minted prior to 1911.