Published in October 1970, Thor #181 is a key Bronze Age Marvel issue featuring an appearance of Mephisto, one of Thor's most enduring supernatural adversaries and a villain who has become increasingly significant throughout Marvel continuity. Created by Stan Lee and illustrated by John Buscema, with dynamic contributions from Neal Adams, Marie Severin, and Joe Sinnott, this issue is notable for its powerful artwork and escalating cosmic stakes. This professionally graded CGC 8.0 with White Pages is a strong upper-mid-grade example of an important Bronze Age key. Mephisto's continued prominence in Marvel Comics and the Marvel Cinematic Universe has kept collector demand for his early appearances consistently strong. The combination of a desirable character appearance, legendary creative team, and attractive grade makes this an excellent collectible for both Thor and Marvel key issue collectors. A fantastic opportunity to own a certified Bronze Age Marvel key featuring one of the publisher's most iconic supernatural villains.