This listing is for The Uncanny X-Men #210, published by Marvel Comics Group in October 1986, during the title's celebrated 25th Anniversary year. The cover features Colossus prominently in his armored form alongside Storm, Wolverine, and other X-Men team members, with the bold tagline 'C'mon, Mess With Us - Make Our Day!!' The Marvel 25th Anniversary banner appears in the upper left corner, along with a Spider-Man icon in the lower left. Priced originally at $0.75 (U.S.), $0.40 (U.K.), and $0.95 (Canada), this issue falls within a pivotal era of X-Men storytelling under the iconic creative runs of the mid-1980s. Issue #210 is part of the 'Mutant Massacre' build-up story arc, making it a sought-after back issue for X-Men collectors and fans of classic Marvel Bronze/Copper Age comics.