Rare, Vintage style purchased by me from a 50 year old optical store in Sardinia, Italy. The Persol 804 folding sunglasses portray a great combination of form and function. These sunglasses combine classic styling in a sleek form and fold into a very compact size. The really cool element is how some of the hardware that enables the folding. This same sunglass is selling on Sunglasshut.com for $5600.00