The Cook Islands have been issuing their own coins since 1972 and none of them have been minted by the Royal Australian Mint.
If you have such an extensive collection of coins, you are best advised to visit a reputable coins dealer for valuation.
Halfcrown coins were never minted in Australia.
There were no Australian coins minted prior to 1911. With the possible exception of traders tokens (with the traders business name on them), there were no "Australian" coins minted prior to 1910. The only coins circulating in Australia prior to 1910 were British coins.
Nothing. Modified coins have no collector value.
Such a coin does not exist. There were no Australian 1967 50 cent coins minted.
With the possible exception of traders tokens (with the traders business name on them), there were no "Australian" coins minted prior to 1910. The only coins circulating in Australia prior to 1910 were British coins.
No Australian coin minted for general circulation has a hole in it. The only Australian coins minted with a hole in them, were WW2 Internment Camp coins in 1941, and they have the words "Internment Camps" on them.
All Australian Pennies minted from 1938 to 1964 inclusive feature a kangaroo on the reverse. The only Australian Coins to feature wheat was the 1938 to 1964 inclusive, silver Threepence coins.
Of the few Australian general circulation coins that were minted in either 1989 or 1990, there were fewer general circulation 1990 coins minted, making them slightly rarer. 1 cent coins - 1989 - 168 million minted 1990 - 52.99 million minted 2 cent coins - 1989 - 124.5 million minted 1990 - none minted for general circulation 5 cent coins - 1989 - 43 million minted 1990 - 31.81 million minted 10 cent coins - 1989 - 43 million minted 1990 - 23.69 million minted 20 cent coins - 1989 - none minted for general circulation 1990 - none minted for general circulation 50 cent coins - 1989 - none minted for general circulation 1990 - none minted for general circulation 1 Dollar coins - 1989 - none minted for general circulation 1990 - none minted for general circulation 2 Dollar coins - 1989 - 30 million minted 1990 - 8.7 million minted
There were was no Australian 1956 Halfpenny minted.
There were no Australian 1937 Halfpennies minted.
The last Australian Penny was minted in 1964.
The Australian 2 cent coin was introduced at the changeover to decimal currency in 1966. There were no Australian "cent" coins minted prior to 1966.