Marc Jacobs jacket

Like new Marc by Marc Jacobs silk shantung jacket. Purchased at NORDSTROMRACK about ten years ago. I love this jacket so much but I really needed an extra small. This is a small, but with it being a trapeze shape It could fit a medium. The color is slate. 16” shoulder, 18” sleeve, 19” armpit to armpit, 21” dropped waist where the seam with the hidden pocket lies, 26” bottom width, 27” from back of collar to bottom. Retailed nearly $500! Fair offers are welcomed.