The piece still has its original tag, identifying it as a Glextex piece, hand rolled (I believe this refers to the hems) and made in Japan. It is 70% rayon and 30% silk and measures 68 cm square.
The scarf is in good vintage condition. $17.
Note: The scarf is a little wrinkled. I will happily iron it for you if that's your preference.
Just for fun, here are some old Glentex ads: