Attention, buyers of CGC slabs: virtually every CGC slab from 2016-up has what are called "Newton Rings", the rainbow effect made when the outer plastic of the case comes into contact with the inner plastic of the well. The book inside the well is not being affected in any way by this. If it's a "new" slab, you should assume if has Newton Rings to some degree.
I have no control over this. If I could, I would.If Newton Rings are a problem... And I don't blame you if they are... Please ask about them prior to making an offer/purchasing, and I will do everything I can to let you know the severity of the issue. The item "BATMAN The Dark Knight Returns #1 CGC 9.8 SS Signed MILLER (1961014007)" is in sale since Friday, April 24, 2020. This item is in the category "Collectibles\Comics\Copper Age (1984-1991)\Superhero\Batman". The seller is "comic-sutra" and is located in Burbank, California. This item can be shipped worldwide.