Aimee Shramko on June 26, 2017 at 3:40 pm Reply Bonjour! I have a 2008 Ecole Portugaise D’art Equestre scarf by Phillipe Dumas that I discovered at an estate sale. It seems to have all the requirements to be authentic that I have found via Google as to size, rolled hem, etc. It has a small, difficult to see, stain at the edge of one border (presumably lipstick). Is this a rare scarf? How would I go about determining a value?