Tag is labeled size 36. I believe this is French sizing, it would compare to US size 4 or XS or Small. Please compare measurements to a favorite top:

Chest (underarm to underarm): 17.5" across
Waist (across the front): 16.5"
Shoulder to Shoulder: 15"

Arm Length (neckline to cuff): 27.5"
Length (top of shoulder to bottom hem): 21"

Condition: This is in very good vintage preowned condition. Has some light marks from normal wear and visible wear on the edge of the sleeve cuffs, no obvious flaws or damage. Buttons have scuffs. I don't know if the garment tag ever had a brand on it, if it did it has worn off. The leather is in such good condition! Please see all photos for condition.

Please do not hesitate to ask any questions! Smoke free, pet free.