Isabella Bird Linen Collared Black Shirt Boxy Women's L/XL? Chest 52" 3/4 Sleeve

Isabella Bird Linen Collared Black Shirt Boxy Women's L/XL? Chest 52" 3/4 Sleeve The shirt buttons in the front, has a collar and long sleeves. 100% linen. Hand wash or dry clean. Very good pre-owned condition. No rips, tears or stains. There is not a size marking in the shirt. Seems like a L/XL. See photos for measurements.