VTG 1970s Black + White Sweater Geometric Design S

Black + white. Knit, machine. Has a sheen as if there's a metallic in weave. Definitely man-made fiber. No label, commercially made. Sz S. Very good vintage with only faint spots near hem in front that lifted 90% with treatment. Very hard to see but photographed in bright daylight for disclosure. Freshly cleaned. See pics. FLAT measurements, w/o stretching unless noted: Bust 13 to 18" Shoulder, seam to seam 12" Waist 13 to 18" Sleeves, sh seam to wrist 19.5" Shoulder to hem length 18.5"