Things have not gone well at the Australian Mint.

Hundreds of ten cent coins have come out in various shades of colour and ten of them have further anomalies on their tails side:

Three have been printed mirror image.
One has 100 printed on it, instead of 10.
One has 101 printed on it.
One has heads printed on both sides.
One has a lyre bird tail feather missing.
One is missing the entire outer rim.

Stranger still, even the shadows were affected (somehow):

One is casting a shadow in the wrong direction.
One has no shadow at all.

Note:
This is not legal tender.
Things did not really go wrong at the Australian Mint.

Instructions to come soon.