1970s lightweight striped knit batwing top

cream and cocoa brown contrast stripe top. sleeves are 3/4 length and batwing style through the upper arms. the knit is very lightweight. length is slightly cropped and hits at the waist with a loose fit through the body. missing all tags but otherwise no flaws. fits like a medium. pit to pit is 19", waistband is 13" (stretches to 18"), length 21"