All 1988 Australian Coins were minted at the Royal Australian Mint Canberra. Since they were all minted at the same place, there is no mintmark.
There were no Australian commemorative coins issued in 1979. The only Australian decimal coin to have the Coat of Arms on it is the non-commemorative 50 cent coin.
The Australian 1985 One Dollar coin does not have a mintmark. They were all minted at the Royal Australian Mint Canberra.
The US Mint did not issue a space shuttle commemorative in 1988.
An Australian 1988 polymer Ten Dollar note (Johnston/Fraser)(Bicentenary commemorative)(blue presentation folder) AA21 in absolute mint condition and its original packaging, could fetch up to $50 AUD. A reputable coin dealer will be able to give a more accurate valuation.
An Australian 1988 polymer Ten Dollar note (Johnston/Fraser)(Bicentenary commemorative)(blue presentation folder) AA00032097 in absolute mint condition and its original packaging, could fetch up to $320 AUD. A reputable coin dealer will be able to give a more accurate valuation.
Australian two-dollar coin was created in 1988.
NOTE - Australian Five Dollar coins are non-circulating legal tender (NCLT) commemoratives and are issued for the collector market. An Australian 1988 copper-aluminium-nickel Five Dollar coin (Elizabeth II)(Australian Bicentenary commemorative), uncirculated and in absolute mint condition and the original packaging, could fetch up to $12 AUD. There were 3 million minted. An Australian 1988 copper-aluminium-nickel Five Dollar coin (Elizabeth II)(Australian Bicentenary commemorative)(Proof), uncirculated and in absolute mint condition and the original packaging, could fetch up to $30 AUD. There were 124,804 minted. The coins have a gold appearance are composed of 92% copper, 6% aluminium and 2% nickel, weigh 28 grams and are 38.5 mm in diameter. I am not sure what you mean by "unminted 1988 5 coin". A reputable coin dealer will be able to give a more accurate valuation.
An Australian Penny or Halfpenny with a "Y." (PENNY.) mintmark indicates that the coin was minted at the Perth Mint. An Australian Penny or Halfpenny with a "I" mintmark indicates that the coin was minted at either the Calcutta or Bombay Mints in India.
No. The Australian Two Dollar coin was first issued in 1988.
Such a coin does not exist. The Australian Two Dollar coin was first issued in 1988.
It's copper-nickel not silver. They sell for $3.00-$5.00.
These coins are still in circulation so, unless they are part of a proof set or are uncirculated and in absolute mint condition, they are worth One Dollar. An Australian 1993 One Dollar coin (QE II), uncirculated and in absolute mint condition could fetch up to $6 AUD. There were 18.2 million minted. An Australian 1993 One Dollar coin (QE II)(mint your own coin - Canberra), uncirculated and in absolute mint condition and original packaging, could fetch up to $8 AUD. There were 228,664 minted. An Australian 1993 One Dollar coin (QE II)(mint your own coin - Melbourne), uncirculated and in absolute mint condition and original packaging, could fetch up to $10 AUD. There were 67,185 minted. An Australian 1993 One Dollar coin (QE II)(mint your own coin - Sydney), uncirculated and in absolute mint condition and original packaging, could fetch up to $8 AUD. There were 119,373 minted. A reputable coin dealer will be able to give a more accurate valuation.