Vintage Anne Klein Blouse - Beige/Red/Mustard/Blue Chevron Pattern - Sz. M(?)

Vintage Anne Klein Blouse - Beige/Red/Mustard/Blue Chevron Pattern Beautiful vintage Anne Klein blouse with chevron type pattern. I am estimating the age to be 1970s-1980s based on the made in the USA tag with the union affiliation. I have measurements listed in the photos - I am estimating this to be a size M. I also feel that the arms are also more for someone with thinner arms. There are also no tags to note the fabric - based on feel I am thinking it might be rayon. This garment is in really good condition. Please let me know if there is anything additional you might be interested in knowing about this item.