Vintage 80s Sachi New York Blue Art Poncho Cape Embroidered Appliqué STAINED

Vintage 80s Sachi New York Blue Art Poncho Cape Embroidered Appliqué STAINED pretty badly on the back bottom left area featured in photos it’s pretty bad 42 inches long one size I was thinking about trying to wash it but would hate to ruin the embroidery as it’s very beautiful and in good shape maybe a professional dry cleaning could work