http://www.initialmsunglasses.com/M_VINTAGE_SUNGLASSES_COLLECTIONS/AMERICAN_OPTICAL_2.htmlAMERICAN OPTICAL
One more classic specs with diamond shield.
8/22/2011
AMERICAN OPTICAL DIAMOND SHIELD MADE IN USA
http://www.initialmsunglasses.com/M_VINTAGE_SUNGLASSES_COLLECTIONS/AMERICAN_OPTICAL_2.html
