Ultra-rare Porsche 5640 90 . Black metal frame. Dark gray polarizing lenses. Made in Austria in the 80s. You might have seen these or the bigger brother 5620 on Yoko Ono
Carrera 5418 has an metal frame. It comes with a softcase and two interchangeable lenses. A yellow one and the one on the picture that is polarized. The lenses can be changed in seconds. It is my personal favorite of the Carrera Sunglasses.
Nice pair of Porsche 5640 not the in mint condition. The shield is smaller in hight than the one of the more common 5620(famous through YOKO ONO and Kanye West).
Unused? pair of Porsche 5600. I never had better glasses for snowboarding. It is a great feeling wearing these. Totally different to other ski-glasses.