An early ballpoint by Eversharp introduced in 1945. The pen operated by capillary action, hence the name.

Celluloseacetat, schlechter Ersatz für <font color="#FF0000">Zelluloid</font>...

A cartridge filling pen by the French JIF Waterman in the 1930s. It was initially made with glass cartridges and then successfully relaunched in the 1950s with plastic cartridges.

A line of button-fillers made by Parker in the 1930s. Made in two different sizes with several different clips and in a variety of colors, Challengers are often thought of as an economy line. The Deluxe Challenger added some trim, but the Royal Challenger, which came in three colors with a herringbone pattern, was arguably one of Parker's best-looking pens of the period. Early Royal Challengers have a unique sword clip while later models had a stepped clip.

One of many chasing patterns. In the form of multiple "Vs," chevron chasing was found on many BCHR pens.

This does not mean that the clip is missing, rather it indicates that the pen was designed to be used without (and would never have) a clip. Contemporary examples would be the TWSBI Micarta or the urushi Nakayas.

One of many variations on the mechanism used to depress an internal pressure bar against a rubber sac for filling. Coin fillers had a slot in the barrel through which a coin was inserted and pressed.

The solid 14k gold Skyline model produced by Eversharp in the mid-1940s. It was originally called the "Gift of a Lifetime."

A plastic pen from Waterman in the mid-1940s. The Commando was a lower-priced alternative to the higher-end Hundred Year pens and Emblems of the period.

A mid-1930s Art Deco-style pen from Wahl-Eversharp. Coronets were made in all metal models as well as several plastic colored barrels with gold-filled or silver caps. Celluloid inserts at the top of the cap came in red (Dubonnet) or black.

A filling mechanism that involved a semi-circular or "crescent" shaped metal bar that protruded from the side of the pen barrel. When depressed and released it causes suction in the bladder. Mostly associated with early Conklin pens, but also modified and used by Evans and Wirt.

Introduced by Sheaffer in 1939, the Crest began the use and later popularity of metal caps. It was a high-end pen, and the name has been re-introduced on a line of contemporary Sheaffer pens.