1990 Proof Cents - Look Weird....

The planchets from the 80's suffered because of a poor rinse technique. This may be another case of poor plating/adhesion before the strike.

I think most would shy away from these. They like that mirror finish better. I just noticed in the second image there is a linear plating bubble that runs through the LIBERTY. So it may be just a gas between the plating issue.

Its neat,,,see how many sell it on ebay,,,I think you should have it graded,,Cosmos

Here is an great error coin. (Not mine of course)

My definition of an error coin is a one time occurrence.

To me die wear, breaks, cracks, chips, clashes, over polished dies, die wear, die gouges, Grease Filled Dies, Feeder Finger Damage and other things are not collectables as they happen over and over. There are some die cracks that are interesting, that flow from one edge across the whole coin to the other edge, Die Cuds, When something is extreme, then people look for these to buy. When I first started collecting, I saved all this stuff in mainly cents and now looking back they are still worth what it says on the back. I wasted 4 cents putting these into 2 X 2's So now knowing what I do now, I'm trying to help others to not waste an expense of putting them away thinking they will go up in value. If you want to keep them, put them into tubes. I still save them for educational purposes. But I've not used them for some time. I may stop tubing them.

Hopefully you brought them locally. Exchange them if you did. Online sellers get rid of these selling them because the price you paid is near shipping cost. Sending them back, costs about what you paid, so you really don't get your money back. Only buy online from trusted seller .

Those are pretty interesting looking.

Since you like them I would advise leaving them in the sets.