NPT. Waterman #7 Purple 14K nib. Near Mint, Amazing Transparency. NEED NEW SAC IN ORDER TO WRITE Notes: The Ink-Vue employs a lever near the bottom of the pen which ;is unfolded and then pumped.; Each stroke depresses a press-bar which in turn evacuates air from a diaphragm (aka bladder or sac), creating the vacuum needed for ink to be drawn into the barrel through a center filler tube.
