This is a beautiful CAMEL wool sweater by Saint Laurent Rive Gauche, probably from the late 70s to early 80s. A lovely camel brown color (darker than tan), the yarn used is CAMEL hair and is SO SOFT to touch... a real luxury fiber! The YSL sweater is a pullover with slight mock neck, 3 buttons on the left shoulder, long sleeves.
 
Pre-owned, used; in great condition EXCEPT FOR a carefully mended moth hole near the right shoulder and a tiny mend near the center of the back.
 
No size on the YSL label but there's a tiny snippet of a label written in ink( just behind the main label) that looks like it says 41. I'm calling this a modern size M/L. but PLEASE READ the ACTUAL GARMENT MEASUREMENTS given next--
Pit to pit- 19 1/2" across between the underarm seams, making that sweater bust measurement approx. 39" around
Hem- 34" Front shoulder to hem length- 24"
Sleeve length- 23"