Vintage Hardy Amies Men's 1970's Nylon Black Button Up Shirt

Hardy Amies Men's Nylon Button Up Shirt Black with Bit Equestrian design. Long pointy Disco collar. In very good condition except the back dart stitching has come away a few inches on one side and slightly on the other. Please refer to photos. Is barely noticeable due to the scale of the print. No size label, please see measurements. Chest (PTP): 21 inches Shoulders: 17.5 inches Sleeves, outer: 24 inches Length, mid shoulder to front hem: 29.5 inches