Datum Expression Size ： 46-24-150
Lens width: 45mm 
Hinge to hinge width: 140mm
Bridge : 24mm
Temple length: 150mm
 
Popular in the 50s, this classic American style features diamond shaped rivets on the front and temple with seven barreled hinges and a keyhole bridge. It is the exact ‘diamond shields’ that kept the American vintage eyeglass a timeless classic throughout the years with significance to the rising diamond manufacturing in America since the 50s.