Assuming that they are in mint uncirculated condition, the most valuable Australian general circulation Pennies in approximate order of value would be the -
1930
1925
1920 - depending on mintmark
1919 - depending on mintmark
1946
Circulated coins will still have some collector value depending on their condition.
The last Australian Penny was minted in 1964.
The last Australian Penny was minted in 1964.
The last Australian Penny was minted in 1964.
The last Australian Penny was minted in 1964.
Such a coin does not exist. The first Australian Penny was minted in 1911.
The last Australian Penny was minted in 1964. Their place in the Australian currency was replaced by the 1 cent coin in 1966.
29 cents
1930
All Australian Penny questions are updated.
There was no 1970 Papal Visit coin issued in Australia.
Nothing. Modified coins have no collector value.
No general circulation Australian Penny was ever minted in silver. If you have an Australian 1911 silver Penny, it is because somebody plated it, and it is subsequently worthless as a collectible coin. There were a few silver Pennies minted in later years, but they were minted as a trial and never released.