I just searched $400 of 50 cent pieces. This is what I found and have kept
- 1969 - aUnc
- 1972 x 2 - Low Mintage 5.5m
- 1973 x 5 - Low mintage 4m
- 1980 - aUnc
- 1981 - aUnc
- 1983 - aUnc
- 1993 x 3 - Low Mintage 982k
- 1997 x 2 - Low Mintage 4.4m
- 1999 x 2 - Errors - Cuds under the nose
- 1997 - Jubillee - aUnc (minimal wear on the centre design)
- 1970 - Captain Cook (I keep all my Cookie boys. One day I will check them all for the varieties

- 1988 x 5 - Bicentennial Tall Ship (I keep all these too. There was an Unc amongst them
- 2000 x 2 - Royal Visit
- 1981 x 4 - Charles and Diana
- 2005 x 4 - Remembrance (3 x robe cuds [common] and 1 x Unc
- 2001 Centenary of Federation - 3 x New South Wales
- 2001 Centenary of Federation - 1 x Norfolk Island
- 2001 Centenary of Federation - 2 x Nothern Territory
- 2001 Centenary of Federation - 3 x Tasmania
- 2001 Centenary of Federation - 1 x Australian Capital Territory
- 2001 Centenary of Federation - 1 x Queensland
- 1994 - Year of the Family x 2 (Wide Date) I threw 1 back because it had a nasty mark on the reverse.
All in all, there is nothing particularly valuable amongst them. Some are just not easy to come by. I think that in all my searching I have only found perhaps 2 Centenary South Australia, yet they are no less common than the others.
Of the 20 x 2000 Mileniums in this lot (and 100s over time), not 1 incused. I still haven't found one of those.
Now on to my 1000 $1 coins. Lets see what amongst those!