This is Daredevil #19 from August 1966, published by Marvel Comics. It features appearances by the characters Masked Marauder and Gladiator, and was written by Stan Lee with art by Frank Giacoia and John Romita Sr. The cover art was also done by Giacoia and Romita Sr. The comic is part of the Marvel Cinematic Universe and is graded by Certified Guaranty Company (CGC).