Nutcracker wool sewing techniques uniform identifying fabrics selection criteria deterioriation dress Tiziano Vecelli Le Lac des cygnes arsenic Collections Trust UK museums Fleecemaking undergarments khila't seamstress leather Olympic Games data record machinery cross stitch Hemp split stitch idioms marking and labeling symbolism apron reproduction embroidery empress storage identifying fibers darning stitch Qing Dynasty vintage fashion courtship Canadian silk chemicals stripes display damage lining heavy metals Photographs Quick Response Nylon Shanghai reconstruction protection public miser's purse theatre Casse Noisette exhibition padding refugees packing fabric