It has tamper evident seals. It's good for lower to mid-grade books that are not likely to have restoration. The back cover is blocked by the permanent backer-board and cannot be seen. My first batch just came back May 2019.
The item "Captain America #100 CBCS Certified Raw Grade 3.0, not CGC" is in sale since Wednesday, May 29, 2019. This item is in the category "Collectibles\Comics\Silver Age (1956-69)\Superhero\Fantastic Four".The seller is "duckinla" and is located in Long Beach, California. This item can be shipped to United States, Canada.