For your consideration, I have a Vintage 1920s? Shuron 1/10 12K Gold Filled Rimless Octagon BiFocals with case.  These are in nice condition with hardly any scratches.  They are 4" from outer rims of glass.  The shafts also say they are 1/10 12K gold filled.They come from a smoke free home.  I will be listing several vintage items so check out my other listings as I will combine shipping on multiple sales.