100% silk Eileen Fisher vintage top. S/M

This Eileen Fisher 100% silk blouse is rather thick for silk. I have many silk pieces (some of which are listed in my closet) and this blouse is the thickest of the unlined silk pieces. Most of the unlined silk pieces are slightly to mostly sheer. This one is not. The material is textured as can be seen in some of the close-up pictures. The material is not at all stretchy. There are four inch side vents at the bottom of the blouse. The blouse is listed as a size 2, which is between a modern day S and M. (Earlier Eileen Fisher pieces were only two sizes. Based on the size and the Eileen Fisher New York tag, I’m guessing this a piece that was produced in the 1980’s. There is one “spot” on the back of the blouse which is pictured. It doesn’t look like a stain…just a lighter spot. I can send additional pictures of this area if need be. Material content, care instructions, and approximate measurements are pictured.