Sorry to doubt your superior knowledge, but it looks like that because it's taken a hit somewhere and sometime since it left the mint.
You could be right, i don't have that superior knowledge yet but here is a new photo.The damage looks to clean for after mint, that's just my take on it.
PMD Darn I thought I was gonna get to see a iowa corn husk error when I clicked this thread I want one of those.
those are on the Wisconsin quarters and are the biggest rip off coins that I know off since the beginning of error collecting. all they are is die gouged coins and I have some other state quarters with much bigger and better die gouges and the will not sell for much because no one ever lied about them and hyped them up like they did the Wisconsin die gouges. I have a Minnesota quarter here somewhere that has a awesome die gouge below the loon bird and looks like a torpedo going thru the water towards the loon. I only found one of these from thousand of new mint rolls so the mint workers must have destroyed the rest of them or at least all they could find.If someone would like to see this coin I may try to dig it back out of my boxed up collection. die gouge coins tend to keep loosing their value soon as everyone finds out it is just a die gouge.