16 Paper, cardboard and goods made from these materials, not included in other classes; printed matter, including commercial printed matter, writing paper, envelopes; postage stamps, leaflets and magazines; greeting cards and picture postcards; photographs; pamphlets, catalogues, user manuals, forms; printed advertising material; stickers, posters, cards, greeting cards, invitation and announcement cards, pictures, writing paper, jotters, pads, note pads, diaries, albums, photograph albums, calendars, sketch books, drawing books, colouring books, books, periodicals and magazines; office requisites (except furniture), in particular stamps, ink pads and ink therefor, letter openers, folders for papers, pads, office perforators, staplers, rulers, pencil sharpeners, elastic bands, paper clips and staples