There were no 1967 or 1968 Australian 50 cent coins minted for circulation. There were a few "pattern" coins minted, but they were never issued and very few coin catalogues even acknowledge their existence, much less offer a valuation.
These coins are still potentially in circulation so, unless they are part of a proof set or are uncirculated and in absolute mint condition, they are worth 50 cents.
An Australian 1969 cupro-nickel 50 cent coin (Elizabeth II), uncirculated and in absolute mint condition could fetch up to $25 AUD.
There were 14.015 million minted.
An Australian 1969 cupro-nickel 50 cent coin (Elizabeth II)(Proof), uncirculated and in absolute mint condition could fetch up to $90 AUD.
A reputable coin dealer will be able to give a more accurate valuation.
These coins are potentially still in circulation so, 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.
An Australian 1979 cupro-nickel 50 cent coin (dodecagonal)(Elizabeth II), uncirculated and in absolute mint condition could fetch up to $5 AUD.
An Australian 1979 cupro-nickel 50 cent coin (dodecagonal)(Elizabeth II)(Double Bar), uncirculated and in absolute mint condition could fetch up to $12 AUD.
There was a combined total of 24.886 million minted.
An Australian 1979 cupro-nickel 50 cent coin (dodecagonal)(Elizabeth II)(Proof), uncirculated and in absolute mint condition could fetch up to $10 AUD.
An Australian 1979 cupro-nickel 50 cent coin (dodecagonal)(Elizabeth II)(Proof)(Double Bar), uncirculated and in absolute mint condition could fetch up to $100 AUD.
A reputable coin dealer will be able to give a more accurate valuation.
The 1966 fifty cent coin is the only Australian circulating decimal coin struck in a precious metal. It weighs 13.28 grams, and is 80% silver / 20% copper, for a nett weight of 0.3416 ozt ASW - the actual silver weight is slightly more than 1/3 of a troy ounce.
99.99% of these coins are traded for their metal value only (they are not melted down, but are bought and sold in bulk quantities as-is).
A very small and exclusive number of "patterns" have been sighted over the years - these are very slightly different to the 36 million coins that were struck for circulation, and are considered to be among the most important Australian decimal coins ever struck.
See the link below.
There were no 1968 Australian 50 cent coins minted.
Such a coin does not exist.
The Australian 50 cent coin was first issued on the 14th of February, 1966, at the change over to decimal currency.
Such a coin does not exist. There were no Australian 1967 50 cent coins minted.
Such a coin does not exist. The first Australian 10 cent coin was issued in 1966.
Such a coin does not exist. The Australian 2 cent coin was first issued in February 1966.
Yes. The Australian 50 cent coin has been issued in every year except 1967 and 1968.
There is no Australian 1954 20 cent coin. Decimal currency was introduced in 1966.
There is no Australian 1950 20 cent coin. Decimal currency was introduced in 1966.
Such a coin does not exist. The first Australian 20 cent coins were issued in 1966.
Such a coin does not exist. The first Australian 20 cent coins were issued in 1966.
Such a coin does not exist. The Australian "cent" coins were first introduced in 1966.
Such a coin does not exist. The Australian 2 cent coin was first issued in 1966 on the introduction of decimal currency.
Such a coin does not exist. The Australian 1 cent coin was first issued in 1966. The Australian One Penny coin was issued from 1911 to 1964 inclusive.
Such a coin does not exist. The first Australian 2 cent coin was issued in 1966.