Blackboards; Scrapbooks; Desk mats; Desktop cabinets for stationery being office requisites; Document files; Document holders; Drawing boards; Drawing instruments; Marking ink containing biologics for use in authentication of objects; Marking pens; Memo pads; Name badge holders; Name badges; Office perforators; Pens for marking; Printed calendars; Retractable reels for name badge holders; School writing books; Sealing compounds for stationery purposes; Terrestrial globes