Vintage plastic framed glass mirror, Dart or Burwood? Syroco style, heavy molded plastic with 'antique' finish, very pretty! This has a some discoloration to the backing (it's about 50 years old), but looks very good on the front of the frame and the glass.
Measures about 28" long x 18" wide overall, glass is about 17 1/2" x 12 1/2". This is a lovely statement piece that's much easier to hang than the massively heavy 19th century carved wood originals!