Authentic silk lined 1970s sweater coat size small/medium

Incredible 1970s sweater coat. Private buy from someone’s closet locally who is slowly selling her clothing. She’s in her 60s by now and still has so many genuine items from the 1970s. I love this but I rarely wear it as a busy mom so I’m letting it go. Size small or medium Buttons all the way down Silk lined Missing brand tag Incredibly warm Fuzzy A rare find.