I was did some research and these are known as Newton's rings. CGC describes it as: The rainbow effect or. Are a normal occurrence when two different plastics (which have different refractive indexes) are placed together. It's what you sometimes see on a smartphone screen protector or on the edges of an LCD screen.
On this slab, I noticed two small rings while holding it 8 away from my face. The front cover has a 1/2 circle. The back cover has a 1/8" by 1" streak. This book will look great on a wall and everyday viewing! The slab will be wrapped in foam sheet.
The item "DC Comics New Teen Titans 2 CGC 9.2 SS George Perez 1st Deathstroke" is in sale since Sunday, July 26, 2020. This item is in the category "Collectibles\Comics\Copper Age (1984-1991)\Superhero\Teen Titans". The seller is "castrovalleyresellers" and is located in Castro Valley, California. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Viet nam, Uruguay.