16 writing instruments, namely, pens, fountain pens, ballpoint 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, namely, blotters, letter trays, letter openers, trays for holding paper, desktop holders for corkboard pins and paper clips, pen and pencil stands and holders