The debut issue of Robert Kirkman's hit horror series was a CGC-graded 9.9, making it of great value to collectors.
Walking Dead #1 is nine years old, having been originally published by Image Comics in October of 2003. Approximately 7,200 copies were distributed to stores around the US, but the series' fanbase has since sky-rocketed.
More than 10.9 million viewers tuned in to watch the first episode of season three of the AMC television show the comic has spawned, a new record for a basic cable drama series.
Walking Dead reached the milestone of 100 issues in July, with the landmark issue selling out of its record-setting initial run of 383,612 copies, before returning for a second printing.
The Walking Dead #104 arrived in stores this week.