AVENGERS #77, 79-81, 83-84, 88-89 (8 in Lot) - (1970/71 - MARVEL) - Includes the first appearance of Red Wolf, the first appearance of Valkyrie + the first team appearance of the Lady Liberators - NB: Issue #84 is sealed with a COA that says it has been signed by Roy Thomas + Issue #81 has additional staples (possible production error)