What kind of comic books can a buyer generally expect to find inside a graded comic book mystery box?

The contents can vary widely based on the seller and the box's tier. Expectations range from modern key issues (first appearances, significant events) to vintage comics, variants, signed copies (often with witness certification), or even lower-grade copies of highly sought-after books. Reputable sellers often provide hints about the potential types of comics or the eras covered without revealing specific titles.