Stamp value checker
Upload a clear photo of your stamp, front and back. The estimator identifies the country and issue, checks centering, perforations and cancellation, and estimates what it sells for. Most stamps are common, so it also says when a stamp is worth little.
Example estimate
Polaroid SX-70 Land Camera
$190
Usually sells for $120 – $320
Your result appears here.
How to photograph it
Good photos are the biggest single improvement to an estimate. These are the shots that matter most.
- Photograph the stamp flat in daylight, filling the frame.
- Shoot the back to show gum, hinges or thin spots.
- Keep all perforations in the shot.
- Handle stamps with tongs, not fingers.
What decides the price
- Issue and rarity
- Older issues with small printings, and famous errors, are where value sits. Mass-printed modern stamps rarely sell above face value.
- Centering
- Stamps with the design evenly centered within the perforations sell for much more than off-center copies.
- Gum and hinges
- Mint never-hinged stamps with original gum command premiums; hinge marks and missing gum lower value.
- Faults
- Thins, tears, missing perforations and heavy cancellations reduce value.
What this market actually looks like
Stamp collecting has an unusually wide gap between the number of items and the amount of money, and new sellers consistently misjudge it. Billions of stamps were printed, most collections consist almost entirely of common issues, and a thick album can genuinely be worth very little. Dealers price ordinary accumulations by weight or by the thousand because sorting them individually costs more than they contain.
Value lives in specific issues and specific states: early issues of a country, recognised errors such as inverted or missing colours, unusual perforations and watermarks, and stamps still attached to a complete cover with a readable postmark. In several cases the envelope is worth considerably more than the stamp on it, because the postal history is the collectable part.
Condition is strict and the vocabulary is precise. Centering within the perforations, the state of the gum on unused stamps, and whether a stamp is hinged, lightly hinged or never hinged all change the price materially, and a thin spot in the paper where a hinge was removed is a serious fault rather than a blemish.
Modern issues are the trap. Stamps bought as investments from postal services in the last few decades were produced in large quantities for exactly that market, and they overwhelmingly sell below face value today. Mint modern sheets are often most usefully disposed of as discount postage, which is a real outcome worth knowing rather than a joke.
How condition is judged here
- Centering within the perforations
- Compare the white margins on all four sides. Well-centred examples of the same issue can be worth several times a visibly shifted one, and this is the first thing a dealer looks at.
- Gum condition and hinging
- On unused stamps, original gum that has never been hinged carries a strong premium. Previously hinged and regummed are both recorded, and regumming is treated as a repair.
- Perforations and watermarks
- The same design issued with different perforation counts or on differently watermarked paper can be a common stamp or a rare one. A perforation gauge and a watermark tray settle it.
- Covers and cancellations
- A stamp on its original envelope with a clear, dated postmark may be worth far more than the stamp alone. Never soak a stamp off a cover before checking.
What costs people money
Most of the value lost in this category is lost before the item is listed, by the owner, with good intentions. These are the four that come up most often.
- Soaking stamps off envelopes
- It destroys the postal history, which is frequently the valuable part, and it is irreversible.
- Using catalogue values as prices
- Catalogues list retail for fine examples and are widely understood within the hobby to sit far above what collections actually sell for.
- Storing in a damp loft
- Humidity causes gum to stick, paper to foxing and album pages to adhere to stamps. Damp damage accounts for most of the loss in inherited collections.
- Mounting with ordinary tape or glue
- Anything other than a proper hinge or mount damages the stamp permanently, and the damage is obvious to any buyer.
When to bring in a professional
A dealer or a philatelic society will look through an inherited collection, usually for nothing, and tell you whether it contains anything beyond bulk. That is worth doing before any part of it is sold, because the valuable items in a general collection are rarely the ones that look impressive. Expertisation by a recognised committee is worth paying for only on individual stamps where authenticity or a claimed variety carries most of the value, and in that case it is close to mandatory, because serious buyers will not bid without it.
Common questions
Are old stamp albums valuable?
Most inherited albums contain common stamps worth a few cents each. A few key stamps can make a collection worthwhile, so check the oldest pages first.
What does mint never hinged mean?
The stamp was never mounted with a hinge and still has its full original gum. It is the most valuable condition for unused stamps.
Should I soak stamps off paper?
Not before checking them. Soaking can damage some stamps and remove gum. Ask a dealer about anything that looks old or unusual.