1970s rust and gold metallic plaid blouse VINTAGE

Vintage 1970s rust, cream, black plaid with metallic threads throughout. "Stitches" brand. Size tag has been removed, but this is a size junior's medium (I know this because this blouse was mine), but a medium at that time was smaller than a medium now. Feels like a light cotton, but is probably a cotton blend. Measurements lying flat and buttoned, approximately: 14.5 inches shoulder seam to shoulder seam; 19 inches armpit to armpit; 20 inches across hem. In excellent condition.