This 1924 La Plume D’Or is a very special pen. The Bibax capillary-fill Taper/Cone Cap in Red Mottled Hard Rubber is extremely rare. While the barrel is a hollow hard rubber tube, it is NOT an eyedropper-filler. How on earth does this pen fill, then? There are four long slots in the back of the feed. The filling design is to put the pen, nib down, into an ink supply, and the barrel fills through the principle …
