The Royal Australian Mint (RAM) uses a variety of "fonts" on Australian Coins, but the information is confidential so as not to make it any easier for counterfeiters.
Humphrey Paget
None. It is illegal to deliberately damage, deface or otherwise mutilate Australian coins.
Prior to 1933, New Zealand used mainly British coins and a some Australian coins.
The Australian coins, the Australian anthem and the Australian notes.
The original Australian decimal coins were designed by Stuart Devlin and mostly produced by the Royal Australian Mint Canberra.
Mintmarks, if they are used at all, could be almost anywhere on predecimal (pre-1966) Australian coins. You would need to be quite specific about a particular coin in a particular year. Mintmarks, if they are used at all on Australian decimal coins, constitute minor alterations to parts of the animal on the reverse design. If you are keen to find out, I can recommend the following book which contains description and pictures showing mintmarks and where to find them. Pocket Guide to Australian Coins and Banknotes by Greg McDonald.
Australian coins have not changed since last year. General circulation coins are - 5, 10, 20 and 50 cents, and $1 and $2 coins.
There are many places online that one can buy Australian coins as well as many local stores that one can visit. One of the most popular places that one can buy Australian coins is the Australian website perthmint.
There were 4,337,200 Australian 1997 50 cent coins minted.
The reigning British monarch is on the obverse of all Australian coins. Currently, it is Queen Elizabeth II.
No.
All Australian coins feature the reigning Monarch on the obverse, currently Queen Elizabeth II since 1953. For the introduction of the Australian decimal currency in 1966, it was decided to have a uniquely Australian design for coins and most banknotes. See the links below to the Royal Australian Mint (RAM) and The Reserve Bank of Australia (RBA) for images of current Australian coins and banknotes.
Silvery coloured Australian coins in general circulation are the 5, 10, 20 and 50 cent coins. Their composition is 75% copper and 25% nickel. There is no silver in any circulating Australian coin.