St. John Evening silk collar cardigan black size 2 vintage

This St. John Evening cardigan jacket is in EUC with no rips or stains. Black knit, wool blend material with silk lined collar. (Material tag is cut out so I don’t know exactly what it is made of). There is an area on the collar where a brooch may have been attached (the scrunched area) but I am not sure. Easily add your own brooch or wear as is! Features four buttons down the middle, top button with hook and eye closure. Zipper adornments on sleeves. Size 2. Measurements: -armpit to armpit flat across back approx. 17” -length approx. 20”