A smaller version of some pen models, perhaps meant to attract a younger female customer. The term was used especially with the Parker Vacumatic Debutante of the 1940s.

Also referred to as Art Deco, this was a style of visual design that began in Europe before the First World War and extended world-wide through the 1920s. A number of makers produced pens with Art Deco styling, but the term most often refers to those from Wahl-Eversharp. The oversize Personal Point pen with the Greek Key band is often called the "Deco band," and later Wahl Equi-poised (Equipoise), Doric, and Coronet pens contained Deco style elements.

Like debutante, a term referring to a smaller version of a pen line. Parker 51s in the smaller size were called Demi.

Many pens were produced with transparent barrels to be used as salesman's models to demonstrate internal working mechanisms. More recently, the clear pens have been produced for style rather than as sales demos, although these are still referred to as 'demos.' One of the best known is the Pelikan 800 green demonstrator, now a highly collectible limited edition.

A name often used to refer to the Parker Thrift-Time series of the early 1930s. These were economy-priced button-fillers that were produced in a wide range of interesting patterns and colors.

The dome of the Eversharp Skyline. Most models have a clip that wraps up over this derby, but a few early models do not. Derbys are usually in the same color plastic as the pen barrel, but some are gold-filled or 14k.

Desk pens usually consist of a desk set, with the base being the marble or other heavy material onto which a holder is fitted, and the pen itself called a desk pen. Desk pens typically have a distinctive taper shape and no cap. Some desk pens, however, were convertible to pocket pens by removing the taper, and adding a blind cap and a cap. Desk sets range from simple single pen models to double pen sets with elegant statues and lamps or clocks. Desk sets tend to be undervalued in the vintage market due to the size and weight of the base.

While the Parker Vacumatic does not use an ink sac, it does use a rubber piece which fits tightly inside the barrel, and when operated by the plunger, expels air to create the vacuum. These diaphragms are now produced so Vacumatics can be restored.

Damage to a metal overlay usually consisting of a pin-sized indentation.

A nib holder to take either steel or gold nibs. The holder itself can be either wood (mostly commonly) or beautifully wrought metal. They were invented in the 19th century to replace quill or reed pens and were themselves replaced by fountain pens starting in the 1880s. They are now occasionally used for illustration or calligraphy.

A fountain pen is a pen with an ink supply that replenished ink to the nib. A dip pen is one that does not have an ink supply and must be dipped. Prior to the popularization of the fountain pen in the late 1800s, ink writing was done with a variety of dip pens. See Fountain Pen History from the PenLovers Homepage.

Early doctor's pens had a thermometer in the barrel along with the pen works. By the '20s, a number of companies produced white sets with a pen, a pencil, and a matching thermometer case.

Made by Wahl-Eversharp in the 1930s, the Doric was named for the 12-sided columns of Greek architecture, the pen having 12 faceted sides. From 1931-34, the Doric had the distinctive Eversharp rollerball clip,. From 1935-41, Dorics had a straight clip. A variety of colors, sizes and cap band styles were made. The later models were available either as lever-filler or vacumatic fillers.

A clip with a clip ball shaped like a teardrop. Found with certain Monblanc pens from the 1930s and 1940s as well as on some Pelikan pens from the same era.

One of Parker's most famous pens, the Duofold was introduced in 1921 in red hard rubber, becoming known as "Big Red." In late 1926, Parker began making plastic pens and Duofolds then became available in Jade, Lapis, Black and ?earl and Mandarin Yellow in addition to the original red and black. They came in Junior and Senior sizes, The 1926-27 models had a single wide cap band, and the 1928-29 models had two narrow bands. These are known as "flat-tops." In 1930, Parker introduced a slightly smaller model with the streamlined look of the period and added several new colors. The Duofold was replaced by the Vacumatic, but ads show that Duofolds of these styles continued to be available from Parker into the 1940s. The Duofold name was re-introduced by Parker later in the decame with a lower priced pen available as either a vacumatic or a button filler. The name aas again been resurrected with the more contemporary Duofold line.