The late 1940s brought the invention of the Sheaffer TouchDown filler. This pen used pneumatics to fill a standard ink sac using a series of metal tubes and an O-ring seal in the tail of the pen. We love these simple filling systems. We think this pen is called a Sheaffer Craftsman, but we aren't sure. We restored it with a new ink sac and O-ring. Its gold-plated trim shows some brassing, but it isn't hideous. The read of the blue pen shows wear from use but no cracks or serious blemishes. You will write a firm, fine line with its two-tone 14k gold nib. It has a small hint of feedback. Click the headline for close-ups. 13cm capped.