Australia does not have a "quarter" coin.
Australia does not have a dime coin.
Australia does not have a "Quarter" coin.
as much as you are willing to pay
Both of these coins are still potentially in circulation. Unless they are part of a Proof or Uncirculated mint set or are individual Proof or Uncirculated coins and in absolute mint condition, they are worth 50 cents and One Dollar respectively.
With the possible exception of traders tokens (with the traders business name on them), there were no "Australian" coins minted prior to 1910.
The Australian Ten Dollar coin is a Non-Circulating Legal Tender coin issued annually by the Royal Australian Mint in a variety of different metals including gold, silver and bi-metal. The value of any coin would be dependant on the year, the metal and the theme of the coin.
The last year Canadian dimes contained silver was 1968. The 1981 dime is worth 10 cents.
A .20 estados unidos mexicano coin is worth about, well, nothing. If you have five of them, you could buy a piece of gum.
It can be worth anywhere from 1 cent - $4.00 it all depends on the grade of the coin.
Such a coin does not exist. Australia was not discovered until 1770. Australian Pennies were minted in most years from 1911 to 1964 inclusive.
2 Pence coins are not used as commemoratives.