YSL 1970s Women's Blazer Jacket
Tag marked size 40, and "tailored in America". Measurements have been provided.
No material content listed, but she reminds me of a linen blend and has some characteristics of tweed. Given the era, polyester would be common as well. But these are my best attempts to describe how it feels and is in-person, I have no way to know for sure.
A nice neutral, natural cream with a very earthy sort of feel. Hints of blues and dark tans/light browns.

Size: Womens 40

Approx, when laying flat and buttoned:
Chest 19 in / 48 cm
Shoulders 16. 5 in / 42 cm
Waist 17. 5 in / 44 cm
Sleeve (top to hem) 26 in / 66 cm
Front Length (armpit to hem) 19 in / 48 cm
Front Length (shoulder to hem) 31 in / 79 cm

Very Good Used Condition; very exquisite piece and in such good condition for it's age. The inside lining appears to have some yellowing/fading and the collar appears to show some wear from use but may just need to be cleaned. There is a spot, as shown in photographs, of a burnt-orange/brown color that seems to be more of part of the nature of the fabric and part of it's coloring, versus a stain, but I cannot confirm one way or another.

This item is sold from a vintage boutique in Dallas, Texas.