Javier Simorra never worn jacket

Never worn gorgeous green Javier Simorra jacket. I would guess it to be a size 8 but go by the measurements: shoulder to shoulder 16", armpit to armpit 19" and waist 17". I am thinking that the jacket is a silk blend with raw edge silk trim. Notched collar. Large snap closures. Fully lined. The jacket has never been worn but has had some pilling and snags from hanging in my closet.