There are 8,999 Nuclear Nerds Comic Tokens, each upgradeable to the latest comic issue during that issue's upgrade window. Doing so will change the display art of the comic token to the cover art of that issue. Once upgraded, a comic token cannot go backward to a previous issue. Remember: the initial air-drop of the comic token is attached to that token's parent Nerd. If you sell your Nerd without "unpairing" your comic, the comic token will be sold with your Nerd.