I don't believe this is die abrasion and the marks are not incuse. This looks like feathers from an eagle, but I don't know what coin it would be from.
Don't bubbles usually look long and tubular? This does not look like any plating bubbles I've seen. These have sharp ridges at the top.
There is no way feathers from another coin can be transferred in the minting process onto a Cent planchet. Plating bubbles come in many forms.
A kind of Plating Blisters is what you have - http://www.error-ref.com/blisteredplating/ This image you provided is the best evidence of this.
Mike, thanks. If this is die damage and not a plating issue then would it be considered an 'error'? Would this be a type of accidental abrasion or a die failure of some sort? Maybe just ordinary die deterioration? Thanks again.
It would be a "die error" according to the classification system I use. I don't know what caused the damage, but was something that "clawed" the face of the die. I have a cent struck by this die pair.
Maybe post a picture of your coin? It's good to know that what I thought was different, was. I'll keep this one then. Thanks again.
This would be the 2nd or 3rd time Mike has given the answer different from what I gave.. Can't argue with what he says!
Perhaps, but you absolutely were correct in that it's not "feathers", which very well may be the bigger overall point here.
