We recently acquired a number of Nitock vintage multi-pens, in excellent unused condition and still in their original packaging.
Each of these 3 + 1 multi-pens features three ballpoint pens (blue, red, and green) and one mechanical pencil. Simply push down the button to change between the pens and pencil. Extra pencil leads are stored inside the pen.
See more of our vintage Nitock writing tools here.