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
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).