Amazing Spiderman #271 Issue: Amazing Spiderman #271 Year: 1985 Significance: First appearance Manslaughter Marsdale a supervillain. This is also his first cover appearance. Buy on Ebay! View Recent Ebay! sold prices Previous Next Related Star Wars #6 Black Keys, Modern Age Flash Rebirth #8 2016 Black Keys, Modern Age DC: The New Frontier #3 Black Keys, Copper Age