16 writing instruments, namely, pens, fountain pens, ball-point pens and pencils; articles made wholly or principally of leather or imitation leather, namely, notebooks, conference folders, agendas, diaries, personal organizers and writing paper folders; articles for the desk, all made of leather, in the nature of blotters, letter trays, letter openers, desktop inkwell boxes, trays for holding paper, desktop pen and clip holders, pen and pencil stands and holders, boxes for desk supplies and boxes for stationery