By Polo or 'Polo' model? Lightweight nickel plated frames backed with a very fine knitted blue silk having a blue 'fur' edge trim. Chamois backed leather sidepieces and simple strap with brass clasp. The frames are good and marked 'Depose Polo' to the hinge points. There is damage to the knitted backing on one side and the strap is very ragged indeed. Fitted with very good clear plastic lenses. These come in a rigid wood/card box embossed with the name 'Andrew J Lloyd Company Opticians, Boston'. We've had these for years and never listed them! Believed to be early French flight goggles. Stock code GDF1AA.