Vintage Helen Hamann Size S? Layered Knit Cardigan Sweater Open-Front Blue Brown

Condition: *Missing size and fabric tags. Has some wear throughout, esp. under arms (see photos). No other issues. Size: Unknown; fit well on my size Small dressform. Color: Blue, brown Design: Open-front layered knit cardigan sweater Materials: Missing fabric tag; this brand made items out of alpaca, and that is what the fabric feels like to me. Measurements (approximate) Shoulders: 36" around Bust: 44" around Waist: 40" around Shoulder to Hem: 28.5" Sleeve Length: 22.5" *E10