Parker's line of sac-less pens. The first was called the Golden Arrow, but because of a patent infringement on the name was quickly changed to vacuum-filler. The next year the name was changed to Vacumatic. The Vacumatic underwent many changes and styles before it was discontinued in 1947.

One of the last Eversharp models before the company was bought out by Parker. Also called the burp pen, the ventura was not a high quality pen and was not a commercial success.

a pen that is sterling with gold-plating overlays. Vermeil pens are scarce, usually of very high quality, and considerably more valuable than sterling or gold-filled models.

Any rubber or latex ink sac that is depressed by a variety of mechanisms to draw in and hold the ink supply.

a section that is clear allowing one to view the ink supply. Fewer pens in most models were made with these sections, and they tend to enhance value.