Okay - I did the search and found an almost identical post to this one created by me years ago!
This time I shall complete it.
This is what I have so far. Still to add in IRB spacings, but I think I have made a decent start

Denomination Year Reason Mint
5c 1972 Very Low Mintage
5c 1985 Very Low Mintage
5c 2001 Flamingo 5
5c 2007 Double head
10c 1985 Low Mintage
10c 1991 Low Mintage
10c 1997 Low Mintage
10c 2011 Low Mintage
20c 1966 Wavy 2
20c 1971 Low Mintage (8.9m)
20c 1976 Double Header
20c 1981 3 1/2 Claws (> aUNC) Canada
20c 1981 CUD Dot above R
20c 1983 Mostly melted down
20c 1984 Mostly melted down
20c 1985 Low Mintage (2.7m)
20c 1986 MSO
20c 1987 MSO
20c 1988 Low Mintage (0.2m)
20c 1995 United Nations
20c 2001 Bradman
20c 2001 Bradman Obv - Filled R of Australia
20c 2001 Bradman Rev
Cud on Inner Circle under A of Bradman
20c 2001 All 9 Federations
20c 2007 Thick / Thin 7
20c 2008 Wave Gap
20c 2008 Missing Claw
20C 2008 Bubble above P'pus foot
20c 2010 Bubble above claw
50c 1966 Faint Double Bars
50c 1970 Captain Cook Tilted 7 in Date
50c 1972 Low Mintage (5.6m)
50c 1973 Low Mintage (4m)
50c 1974 Low Mintage (9m)
50c 1977 COA (Very rare)
50c 1978 Fijian reverse mule
50c 1978 Double Bar (UNC)
50c 1980 Double Bar (UNC)
50c 1981 Royal Wedding broad strike error
50c 1985 Low Mintage (1m)
50c 1986 MSO
50c 1987 MSO
50c 1988 COA Mule
50c 1988 First Fleet
50c 1989 MSO
50c 1990 MSO
50c 1991 Rams Head
50c 1993 Low Mintage (1m)
50C 1993 Faint Double Bars
50c 1994 Year of the Family Wides
50c 1996 Faint Double Bars
50c 1997 Low Mintage (4.3m)
50c 1997 Faint Double Bars
50c 2000 Incused Flag
50c 2000 Fat Letter 50c
50c 2001 All 9 Federations
50C 2007 Faint Double Bars
50c 2007 50c Cud
50c 2010 COA & Upset / Rotated error
50c Misc Ramstrike
50c Misc Commemorative (UNC/Perfect)
$1 2000 Mule
$1 2000 High Grade
$1 2001 Federation Upset / Rotated
$1 1984 Rabbit Ears
$1 1985 Rabbit Ears (very rare)
$1 1994 Rabbit Ears
$1 1998 Rabbit Ears
$1 2000 Rabbit Ears (Rare)
$1 2005 Rabbit Ears (Extremely rare)
$1 2006 Rabbit Ears (Scarce)
$1 2008 Rabbit Ears
$1 2009 Rabbit Ears
$1 2010 Rabbit Ears
$1 2011 Rabbit Ears
$1 2013 Rabbit Ears
$1 2014 Mob Of Rues (Low Mintage)
$2 2011
$2 2013 Purple Coronation
1c 1968
1c MISC High grade < 1974
2c 1967 Missing SD (Rare)
2c 1968
2c 1968 Missing SD (Very Rare)
2c 1969
2c MISC High grade < 1974
$1 MISC Rabbit Ears
MISC MISC RIM CUDS
MISC MISC Face CUDS
MISC MISC Lamination Peels
MISC MISC Die Cracks
MISC MISC Clipped
MISC MISC Oil Strikes
MISC MISC Weak Strikes
MISC MISC Offset Strikes
MISC MISC Upset/Rotated
MISC MISC Low Mintage (add to list above)
MISC MISC Wire Line
MISC MISC Clam Shell y
MISC MISC Mint Marked
5c MISC SD - Large / Small