GUC Vintage IB Diffusion 100% silk blouse size 12- Please read

GUC Vintage IB Diffusion 100% silk blouse from the closet of an older relative who has downsized. This blouse has a spill stain on the top of the left shoulder that I am fairly sure will come out with a dry cleaning (in photos), but I have not tried it. There is also a very small dot on the back of the left sleeve, not evident unless looking for it (in photos). Measurements: pit to pit 24", length 30" . A lovely color and great option as an overshirt. From a smoke free and dog friendly home.