1. The Cover: The most common location is on the cover of the comic, usually in a prominent position, often near the title of the comic or in the top right corner.
2. The Spine: You might also find the issue number on the spine of the comic near the title. This is especially helpful for comics that are collected in graphic novel format.
3. The Title Page: The issue number will also appear on the title page of the comic, which is the first page after the cover.
4. The Copyright Page: The copyright page typically includes the issue number, though it might not be the first place you look.
If you're having trouble finding the issue number, try checking all of these locations.