Teeth

Stamps with teeth: perforations need not perplex collectors
By Janet Klug ...

Teeth: The points that are protruding in the perforations of a stamp.
Thematic: A collection of stamps, or covers on a specific theme.
Tong: Tweezers-like tool with rounded tips which is used to handle stamps.

Teeth - The protruding points along the outer edge of a separated, perforated stamp.
Telegraph Stamp - Label used for paying telegraph fees.

Teeth: The protruding points along the outer edge of a perforated postage stamp when it has been removed from the pane.
Telegraph stamp: Label used for the prepayment of telegraph fees. Telegraph stamps resemble postage stamps.

Perforation Teeth - the tooth-like projections of paper on the edges of perforated stamps.

Fine perforation: perforation with small holes and teeth close together.

Gauge - Number of perforation holes in a length of 20 mm (in the case of most definitives, the number of teeth counted across from left to right).
Gepruft - (German) Censored.

The standard for describing perforation is the number of holes (or the "teeth" or perfs of an individual stamp) in a 2-centimeter span.

Perforations are measured by the number of holes or teeth using a perforation gauge. The size and spacing of the stamp perforation varies.
Security perforations are uneven teeth marks to make stamps difficult to forfeit.

Coarse Perforation Large holes and teeth far apart and irregularly spaced.
Coils Stamps issued in rolls (one stamp wide) for use in dispensers or vending machines.

Peak - the nickname given to the 'teeth' (or mountain) on a die-cut simulated perforation on a self-adhesive stamp. See Valley.

Just like coloured stamps, these stamps are not perforated and do not have teeth. Blackprints have no postage value, but are considered a philatelic rarity of high value. Journalists used to use them for their publications.

A scale printed or designed on metal, plastic or cardboard to measure the number of perf holes or teeth within two centimeters.
Philatelist:
A student of stamp collecting.

Perforation Gauge: A scale printed or designed on metal, plastic or cardboard to measure the number of perf holes or teeth within two centimeters.

Positive condition factors include fresh full colour, full original gum on unused stamps, and so on. Damage such as creases, tears, thinned paper, short perforation teeth, toning and so on negatively affect condition.

an edged tool (die) completely penetrates the stamp paper on all sides of the printed stamp, making possible the removal of the individual stamps from the liner. Die cuts may be straight, shaped in wavy lines to simulate perforation teeth, ...

Unused stamps should have the gum intact, the design of the stamp should be well centered, leaving even margins on all sides between the design and the perforations, and the perforations themselves should be without blemish and with no teeth missing.

See also: Stamp, Used, Perforation, Cancel, Perforations