Discontinued and rare Rotring 600 old-style knock-type ballpoint pen. With color indicator window (red, green, blue, black) This is a vintage used item, so there are fine scratches and signs of use. Also, the logo has some scratches and peeling. The knock mechanism and color window rotation both function smoothly without any problems. - Currently out of ink. - This is an item for sale of the pen body only (box, instruction manual, etc. are not included). This is a vintage item. Please understand this before purchasing. #Rotring600 #rotring #rotring600 #Discontinued #ColorWindow #KnockType #OldLogo #Vintage #BallpointPen #WritingInstruments #Stationery #StationerySupplies