Many, Many Die Chips!

That's interesting, I didn't notice until you pointed it out. I have one ACT with chips and one without.

I wonder how common they are? Anyone else notice this?

Edit, I also have a couple of extra chunks of metal on the obverse
in "R" and "L" of Australia.

This is a list of my CoF 20¢ errors:

Qld Obv Cud In Front Of Hair X 3
Qld Obv Strike Through Between Hair & 'Liz"
Qld Obv Partly Filled 'R': Rev Filled 9
Qld Obv Partly Filled 'B' 'R' 'A': Rev Filled 9
Qld Obv Partly Filled 'R' 'A': Rev Filled 9
Qld Rev Cuds in some Shoe Prints

NSW Obv Cuds - Front Of Hair, Under Chin: Rev Die Crack Bottom Left Corner Map To Rim
NSW Obv Cuds - Back Of Head: Rev Cuds Beside The Left Of & Under Map
NSW Obv Cuds - Front Of Hair: Rev Die Crack Bottom Left Corner Map To Rim X 2
NSW Rev Die Crack Bottom Left Corner Map To Rim X 2
NSW Rev Cuds To Left Of & Under Map
NSW Rev Cuds Beside The Left Of & Under Map X 2
NSW Rev Cuds Beside The Left Of Map

Vic Obv Die Crack Neck Towards Rim X 5
Vic Obv Cud Bridge Of Nose
Vic Obv 2 Cuds Back Of Head
Vic Rev Thick 9 In Date X 3

SA Obv 2 Die Cracks Neck To Rim, 1 To Rim
SA Rev Die Crack Rim Through 'F' & On Through 2 Flower Petals X 2
SA Rev Die Crack Rim Through 'F' & On Through 1½ Flower Petals

WA Obv Cud Cheek, Die Crack 1 To Rim
WA Obv Die Crack 1 To Rim, Strange Patch On Cheek (Strike Through Or Pl Flaw - I Don't Know Which)
WA Obv Die Crack 1 To Rim
WA Obv Strike Through Nose, Multi Fine Die Cracks, A,U,A,I,A + 1 (All To Rim)
WA Obv Cuds At Hairline, Eyebrow, Bridge Of Nose, Fine Line With 'Beads' From Lips To Chin
WA Obv 'Flap' Of Metal Above Top Point Of Map Spreading To Rim X 2

Tas Obv Strike Through Forehead To Nose, Die Crack 1 To Rim
Tas Obv Strike Through Forehead, Nose, Mouth, Cheek
Tas Obv Strike Through Hair To Nose, Fine Line With 'Beads' From Chin To Halfway Down Neck
Tas Obv Rough Patch Chin To Centre Of Cheek (Strike Through Or Pl Flaw - I Don't Know Which)

NT Obv Strike Through - Temple
NT Obv Strike Through - Nose & Top Lip
NT Obv Cud Bottom Lip
NT Obv Small Cuds Cheek & Chin
NT Obv 'Stitched" Lips, Fine Line With 'Beads' From Lips To Chin
NT Obv Fine Line With 'Beads' From Lips To Chin
NT Obv Cud Nose, Fine Line With 'Beads' From Nose To Chin
NT Obv Small Cuds Cheek, Fine Line With 'Beads' From Top Lip To Chin
NT Obv Filled Die, Faint 'Zabeth"
NT Rev Filled Die, Faint 'Territory'

ACT Obv Pl Flaw In Front Of Nose
ACT Obv Long Cud On Cheek
ACT Obv Part Filled R: Rev Filled, E,E,B,R,G In Celebrating: E In The :S,R In Australia
ACT Rev Cud On 2
ACT Obv Cud Chin
ACT Obv Cuds Nose, Chin, 2 In Hair,
ACT Obv Cuds, Hair & Nose
ACT Obv Cuds Nose, Chin, 2 In Hair X 2
ACT Rev Cud In Front Of 2
ACT Rev Filled, E,E,B,R,G In Celebrating: E In The :S,R In Australian X 3
ACT Rev Filled, E,E,B,R,G In Celebrating: E In The :S,R In Australian X 3, Cud Between A&T Of Celebrating, + Cud On Bottom Right Stroke Of N, Cud To Left Of Map In Front Of 2
ACT Rev Filled 2nd E Of 'Celeb', Cud In Front Of 2, Die Crack Across Top Of 'Ebrat' & Bottom Of 'Leb' X 2

N.I. Obv Cud - Cheek (Small)
N.I. Obv Cud - 3 on Cheek (Small)

I posted this list in the Aussie forum in Aug 07, and I think I may have found found more errors since then but haven't updated the list.

Does anyone know of any errors on the CoF 50¢?

It really strikes me just how badly they managed to do with so many errors in this series of coin, considering the low mintage of each design. I am thinking could it be possible they used a single die for each design, and the life of the die is not quite the 2,000,000 which was minted of each design.

Hmm, ok then I have not really read or know much about the actual minting process, but just had a look around and found a little on the mint site. It lists the following "On average each working die produces 250 000 coins but some dies produce over one million coins." now I would expect that 1 million would be a very rare case, but their would be considerable cost saving for them if they could use fewer dies per design. Not just cost savings on dies, but down time on the press, at 650 coins a minute taking just 15 minutes to change a die means 10,000 coins not pressed in that time.