These wonderful spectacles by Tiffany designed by Oleg Cassini are varifocal prescription lens. The frame is marked with ‘Tiffany 4 by Oleg Cassini’. The frame arms and bridge look as though they are gold but there is no mark and therefore I cannot confirm this. The designer Oleg Cassini was a designer to the stars and Jacqueline Kennedy in the USA although from Russian descent. The specs measure 5.5 inches 14 cms from edge to edge of frame including the space between lens and arm. The bridge measures 5/8 inch 1.5 cms. The lens is 2.5 inches 6.5 cms high and the width of the lens is 2.25 inches 5.5 cms wide. I do not have the original case.