Danish Design Unsized (L?) Turtleneck Sweater Vintage

Cream knit cowl turtleneck sweater with gray blue design. Unsized, estimating a large but please see measurements. Several small discolorations (possibly rust) that did not come out with a damp cloth. I'm not sure if they are removable with further treatment. Tagged Danish Design, no materials tag present but feels like some sort of wool.