As apple said, none documented.
However there is a 'condition' known to occur in quite a number of 10c years. I believe it's due to die fill and the 'error' is known as "missing feather'.
Years I have: 76, 80, 82, 83, 90, 91, 92, 93, 94, 98, 99, 00, 04, 05, 06, 07, 08
Other years I know of are: 66, 77, 78, 79, 81, 84, 85, 88, 89, 97, 03
The closest I have for 1997, is what I call 'almost' missing feather.
This image is to show the area to look at on a normal 2006 coin:

My Almost Missing feather 1997 Coin

Close up showing the remnant of the feather, which is why it's only 'almost' missing.

Not very exciting is it?
I haven't even looked for any of these since 2008, and I guess it's highly probable that they may exist on later years as well.
However there is a 'condition' known to occur in quite a number of 10c years. I believe it's due to die fill and the 'error' is known as "missing feather'.
Years I have: 76, 80, 82, 83, 90, 91, 92, 93, 94, 98, 99, 00, 04, 05, 06, 07, 08
Other years I know of are: 66, 77, 78, 79, 81, 84, 85, 88, 89, 97, 03
The closest I have for 1997, is what I call 'almost' missing feather.
This image is to show the area to look at on a normal 2006 coin:

My Almost Missing feather 1997 Coin

Close up showing the remnant of the feather, which is why it's only 'almost' missing.

Not very exciting is it?
life is a mystery to be lived not a problem to be solved




















