The product is a vintage first edition comic book titled "Uncanny X-Men 221 First Appearance Mr. Sinister". It was published in 1987 by Marvel Comics and is part of the Copper Age era of US Comics. The comic book features the X-Men superhero team and is written by Chris Claremont with artwork by Marc Silvestri and Dan Green. It is a single issue format with a color style and features the first appearance of the villain Mr. Sinister. The comic book is boarded and considered a key issue for collectors.