Hello jacket enthusiasts, I picked up at auction in U.S.A. Zippers rough, jacket and pant tags great shape, see photos. Decal on pant and jacket (shoulder, plus jacket) are readable. One forum member said consult "Historic Flying Clothing Company" for advice about care and conservation. Does anyone from the U.S.A. have advice on leather restoration? I'd like to get the set "cared-for" or is a set in this raw state more valuable? WW2 Irvin Flying Jacket (original)?WW2 Irvin Flying Jacket (original)?WW2 Irvin Flying Jacket (original)?