I've just ordered a rather decent pair from an online retailer,here in the U.K (Ineedspeks,i apologise for the spelling),they will fit lenses,according to one's prescription,and charge a reasonable £30 with no p+p,apparently,they are based closely on a known period example and there is a choice of gold or grey finish,i thought it was about time i obtained a pair as i'm "short sighted" and squinting just gives me headaches a'plenty.