No.
Nobody keeps a list, but it would be a fair bet that many thousands of coins are damaged either deliberately of accidentally each year. As coins are returned to the bank or the Royal Mint, staff weed out damaged or worn coins and recycle them.
There is no recommended chemical to clean defaced currency. Tampering with or attempting to alter currency is illegal in most countries. If you encounter defaced currency, it is best to contact your local bank or financial institution for guidance on how to handle it.
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.
i have the world record for Most coins so I had 999,999,999 coins
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.
The reigning British monarch is on the obverse of all Australian coins. Currently, it is Queen Elizabeth II.
None. It is illegal to deliberately damage, deface or otherwise mutilate Australian coins.
There were 4,337,200 Australian 1997 50 cent coins minted.
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.
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.