VTG 50s Vera de Gue Original black sweater M

Black long sleeved sweater with geometric embroidered decor on front and back by Vera de Gue. Button front. Probably from the 1950s. Unknown soft material, probably cashmere as it was in a closet with other cashmere sweaters. No material tag present. Approx 17" across at armpits, no size tag. No obvious flaw or damage. Barely used.