CARRERA PORSCHE DESIGN Sunglasses Aviator Teardrop Vintage 5621 90 Y2K 1990s Made In Austria Serial # Unisex A couple scratches on one lense as show in pics but not discernible while wearing. Vintage Carrera Porsche Design 5621 90 sunglasses will be instantly recognizable as the most desired and popular fashion accessory among the cool crowd in the 1980s 1990s and Y2K popularity that continues today with reproductions of this iconic original style but not coming anywhere close to the quality of these original Porsche Carreras. The center hinge lifts up to allow the lenses to be inserted into small prongs on the front frame, and then the hinge clamps back down to secure the lenses in place. The unisex Carrera 5621 Austrian frame measures approximately 150mm temple to temple with lenses measuring approximately 70mm at the widest points and the left lense is laser etched Porsche Design along with the PD logo. Each arm is approximately 20 mm in length and the width between the lenses is approximately 8 mm. It was Carreras use of a new plastic called optyl that made this style possible, for that material is lightweight with outstanding optics and allowed for a size that would have been prohibitively heavy in glass. The inside of one ear stem is impressed with the unique serial number and marked Made in Austria 5621 90 while the other stem is marked Carrera Porsche Design along with the US patent numb