Surrey USA color block triangle poncho style top

Gorgeous Vintage Surrey USA color block triangle poncho style top/blouse 1980s 1990s style color block. Front is purple, teal, and blue. Back is purple, pink, and black. One size. Measures approximately 32 inches armpit to armpit (it does have seams). Measures about 30.5 inches from neckline to bottom of point. Fabric content is not listed. There are some marks on the black section. See last photo for closeup. See photos for details and condition.