Philately Glossary: 100 Stamp Collecting Terms Explained (2026)

Every hobby has its private language, and philately's is denser than most. A single auction catalogue can throw out se-tenant, tete-beche, perfin, and aniline in a single sentence, leaving a newcomer baffled. Learning the vocabulary is the quickest way to turn that wall of jargon into a useful tool, and this glossary of 100 stamp-collecting terms is built to do exactly that.

This philately glossary defines 100 essential stamp-collecting terms, grouped by theme, from the basics of stamp types and condition to printing, postal history, errors, and the market. It is a reference for collectors at every level.

Use it to look up an unfamiliar term, or read it through to build a foundation. The terms connect to the wider IndiaPost philately guides, starting with the overview of philately in India.

Stamp types and formats

Philately. The study and collection of stamps and related postal material.

Definitive. An everyday stamp printed in large quantities over a long period for regular postage.

Commemorative. A stamp issued in limited numbers to mark a person, event, or theme.

Miniature sheet. A small decorative sheet containing one or a few stamps within a themed border.

Souvenir sheet. A small sheet produced specially for collectors, similar to a miniature sheet.

Se-tenant. Two or more different stamps printed joined together on the same sheet.

Tete-beche. A pair of stamps joined so that one is inverted relative to the other.

Overprint. Additional text or a mark printed onto an already-issued stamp.

Surcharge. An overprint that changes a stamp's denomination or value.

Service stamp. A stamp issued or overprinted for official government use.

Definitive series. A set of definitive stamps sharing a theme across many denominations.

My Stamp. India Post's personalised stamp carrying a customer's chosen image, covered in the guide to My Stamp by India Post.

Revenue stamp. A fiscal stamp affixed to documents to show a duty or fee was paid.

Postage due. A label or stamp showing unpaid or underpaid postage to be collected.

Booklet. Stamps issued in small panes folded into a card cover for retail sale.

Condition and grading

Mint. An unused stamp, ideally with original gum intact.

Used. A stamp that has been postally cancelled.

Mint never hinged (MNH). A mint stamp with original gum, never mounted with a hinge.

Original gum (OG). The adhesive applied by the postal authority, undisturbed.

Regummed. A stamp to which fresh gum has been added to imitate original gum.

Centring. How evenly a stamp's design sits within its perforations.

Sound. A stamp free of faults such as thins, tears, or creases.

Thin. A weak spot where paper has been lost from the back of a stamp.

Crease. A fold mark that reduces a stamp's value.

Foxing. Brown spots on paper caused by damp and age.

Toning. Discolouration of the paper, often from age or storage.

Hinge remnant. A piece of a stamp hinge left stuck to the back of a stamp.

Grade. The overall condition rating that strongly affects value, as the guide to valuing and selling a stamp collection explains.

"The value of a stamp depends on factors including its rarity, condition, age, and demand among collectors." (General philatelic principle, 2026.)

Printing and production

Engraving. A printing method using an incised plate, giving fine raised lines.

Lithography. A flat printing process used for many early and modern stamps.

Photogravure. A photographic intaglio process giving fine tonal detail, used for the 1948 Gandhi set.

Offset. A common modern printing method using rubber blankets to transfer ink.

Perforation. The rows of small holes that allow stamps to be separated.

Perforation gauge. A tool that measures the number of perforation holes per length.

Imperforate. A stamp issued or produced without perforations.

Roulette. A series of cuts, rather than punched holes, used to separate some stamps.

Watermark. A faint design pressed into the paper as a security and identification feature.

Gum. The adhesive on the back of a mint stamp.

Pane. A subdivision of a full printed sheet of stamps.

Sheet. The full printed unit of stamps as issued by the printer.

Gutter. The blank margin between panes on a sheet, sometimes collected as a gutter pair.

Aniline. A type of fugitive ink that runs when wet, used as a security measure.

Phosphor. Luminescent bands or coatings used on stamps for automated sorting.

Postal history and covers

Cover. An envelope or wrapper that has passed through the post.

First day cover (FDC). A cover bearing a new stamp cancelled on its first day of issue, covered in the guide to first day covers explained.

Cachet. A printed design on a cover, especially a first day cover, illustrating the theme.

Cancellation. A postmark applied to deface a stamp so it cannot be reused.

Postmark. An official mark showing the place and date of posting.

Maximum card. A postcard with a matching stamp on the picture side, cancelled to tie them together.

Special cover. A cover issued for an event, with a relevant cachet and cancellation.

Postal stationery. Postcards, envelopes, and aerogrammes with an imprinted stamp.

Aerogramme. A lightweight, foldable air letter sold with postage imprinted.

Postal history. The study of postal routes, rates, and markings, beyond the stamps themselves.

Cover album. An album designed to store and display covers flat and protected.

Used on cover. A stamp still attached to the envelope it franked, often more desirable than a loose used stamp.

Errors and varieties

Error. A genuine production mistake, such as a wrong colour or inverted design.

Invert. A stamp on which part of the design is printed upside down, like the 1854 Inverted Head Four Annas.

Missing colour. An error where one colour failed to print.

Colour shift. A misalignment where a colour prints out of register.

Double print. An error where the design is printed twice.

Variety. A minor consistent difference distinguishing one printing from another.

Constant variety. A flaw that appears in the same position on every sheet from a plate.

Plate flaw. A defect on the printing plate that marks every stamp it prints.

Reprint. A later printing from original or copied plates.

Reproduction. An openly made copy, sometimes for study or display.

Forgery. A copy or alteration made to deceive, as detailed in the guide to spotting fake stamps.

Faked overprint. A false overprint added to a common stamp to imitate a rarity.

Expertisation. Authentication of a stamp by a recognised expert, often with a certificate.

"For valuable stamps, expert certification is essential before any purchase." (Philatelic authentication principle, 2026.)

Collecting, denominations, and the market

Anna. An old Indian currency unit, one-sixteenth of a rupee, used on early stamps.

Pie. An old Indian sub-unit, one-twelfth of an anna.

Naye paise. "New paise," the transitional decimal denomination after 1957.

Denomination. The face value printed on a stamp, set out in the guide to the Indian postal stamps chart.

Face value. The postal value a stamp represents.

Catalogue value. A reference price listed in a catalogue, usually above the realised market price.

Market value. The actual price a buyer will pay for a stamp.

Provenance. The recorded history of a stamp's previous owners.

Topical (thematic) collecting. Collecting stamps by subject rather than by country.

Traditional collecting. Collecting the stamps of a country or period in sequence.

Block. A group of four or more stamps still joined together.

Strip. A horizontal or vertical row of joined stamps.

Pair. Two joined stamps.

Single. An individual stamp separated from the sheet.

Stockbook. An album with clear strips that hold stamps without adhesive.

Hinge. A small folded gummed paper used to mount a stamp on a page.

Mount. A clear protective sleeve that holds a stamp without adhesive touching it.

Tongs. Tweezer-like tools used to handle stamps without touching them.

People, places, and other terms

Philatelist. A person who studies and collects stamps.

Philatelic bureau. An India Post counter serving collectors, covered in the guide to philatelic bureaus and the PDA.

Philatelic Deposit Account (PDA). A standing arrangement that supplies new issues automatically.

Perfin. A stamp with initials or a pattern punched through it by a company for security.

Cinderella. A stamp-like label that is not a valid postage stamp.

Locals. Stamps valid only within a limited local postal area.

Scinde Dawk. India's first adhesive stamps, issued in 1852.

Inverted Jenny. A famous 1918 US airmail invert error.

FIP. The international philatelic federation that sets exhibition judging standards.

INPEX. India's national philatelic exhibition, covered in the guide to stamp exhibitions in India.

Exhibit. A mounted collection entered for competitive display at an exhibition.

Frame. A display unit holding a set number of exhibit sheets at a show.

Approval. Stamps sent by a dealer for a collector to examine and buy or return.

Kiloware. Mixed used stamps on paper sold by weight for sorting.

Album weed. A common term for a forgery or a worthless, deceptive label.

India-specific terms

India Post. The Department of Posts, India's national postal authority and stamp issuer.

ePostOffice. India Post's official online portal for buying stamps and philatelic products.

Definitive of India. A long-running Indian definitive series carrying national themes.

Princely state stamp. A stamp issued by a princely state before integration into India.

Convention state. A princely state that issued stamps under agreement with British India.

Feudatory state. A princely state that issued its own stamps independently.

Court fee stamp. A judicial stamp used to pay fees in court proceedings.

National Philatelic Museum. India's official stamp museum at Dak Bhawan, New Delhi.

Dak. The Hindi word for post or mail, as in Scinde Dawk and Dak Bhawan.

Asokan capital. The lion-capital emblem depicted on early independent-India stamps.

Common abbreviations at a glance

Philatelic catalogues and dealer lists lean heavily on abbreviations, which can baffle a newcomer. The table below decodes the most common ones, so a listing that reads "MNH, OG, FDC" stops being a puzzle. Memorising these few shorthand codes makes browsing catalogues and auctions far quicker.

These abbreviations recur constantly in the trade, so recognising them is one of the quickest gains a new collector can make. Combined with the full terms above, they turn the dense shorthand of a price list into plain English, letting a beginner shop and study with confidence.

How to use this glossary

This glossary is a quick reference, not a substitute for the detailed guides each term draws on. Looking up a word here gives the definition; following the linked guides gives the full context, whether the topic is denominations, covers, rarities, or exhibitions. Treat it as the index to the wider IndiaPost philately library.

For a new collector, reading the glossary through once builds a working vocabulary that makes catalogues, dealer lists, and exhibition labels far easier to understand. The terms also recur across the other guides, so the meanings reinforce themselves as a collector explores topics like types of stamps and stamp collecting for beginners. Knowing the words is the first step to mastering the hobby.

Looking ahead

The vocabulary of philately is largely settled, but it grows at the edges as new formats and technologies appear, from personalised stamps to digital products. The core terms in this glossary have served collectors for generations and will continue to, providing a stable common language across countries and eras. A glossary like this can simply be extended as the hobby evolves.

For any collector, the practical value is immediate: a shared vocabulary turns confusion into understanding and lets a beginner converse with experts as an equal. Learn these hundred terms, and the catalogues, auctions, and exhibitions of philately open up. The stamps themselves are the pleasure; the language is the key that unlocks the whole world they belong to. Keep this glossary beside the album, return to it whenever a catalogue throws up an unfamiliar word, and within a few months the once-impenetrable jargon of philately will feel like a second language, spoken fluently among collectors the world over.