This is a vintage mail order pattern from The Queen of Mail Order Patterns, Ann Adams. The super mod dress features a darted inset front and zipper back. The pattern is cut but complete and comes with an instruction sheet that includes fabric and notion requirements. I'm also including the envelope it was mailed in with a postmark of 1967.
Usually there aren't size specs on AA patterns- and there isn't on this one- but I tracked them down from another Adams I had: