I found all of these today in rolls in Ottawa Canada. The first two look like filled dies. The 1986 has a ring around the top of the obverse side as well as what appears to be doubling on the six. I am not certain if any of these are actual errors and I would appreciate your feedback.
I like your pictures, the rings are an example of Die Deterioration and have no more value than face. Struck Through Grease can be collectible but when the blemishes affect more of the coin or most of it. Hope this helps.
Stick around this CCF. The people here are great and you'll learn a lot. From what I've learned it would be like chzman said. Greased die. And yes, you take some of the best pictures I've seen. I'm still working on finding the best light and camera settings.
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