20 Furniture, mirrors, picture frames; containers, not of metal, for storage or transport; unworked or semi-worked bone, horn, whalebone or mother-of-pearl; shells; meerschaum; yellow amber; metal furniture, furniture for camping, gun racks, newspaper display stands; indoor window blinds and shades; bedding, for example, mattresses, bed bases, pillows; looking glasses, furniture and toilet mirrors; registration plates, not of metal; small items of hardware, not of metal, for example, bolts, screws, dowels, furniture casters, collars for fastening pipes; letter boxes, not of metal or masonry