Hi, First off, this is not my area of expertise however, I notice the fabric seems like a heavy cotton gauze, I see a dropped shoulder or very low sleeve seam and a heavy cotton cord at the waist that looks new. Somehow this looks modern to me but again, we need to hear from other members since my gut feeling is this is not as old as that. Is this machine sewn? Maybe the cord and blue tie are replaced? What is the blue tie made of? Also, how is the casing done for the waist cord tie? Sorry I am not much help since I could be wrong!
Julia