A variation model of 2nd collection [539] with uniquely transformed and rounded hexagonal shape lenses. Same as [539], cloisonne enamel is beautifully placed on the convex shaped rim. It needs exquisite and highly skilled craftsmen to place cloisonne enamel on the tiny and lined surface of the rim and those who can do this is very few. Simple bridge and end pieces are selected for this model. Temple tips are looped to give a modern impression as a whole.