Stamp value guides
Most stamps are worth cents. A few are worth a house. These guides explain which is which, in plain English — what actually sets a price, where the published numbers come from, and how to avoid the mistakes that cost sellers the most money.
Stamp Collection Value for Estate Tax
For estate tax purposes, a stamp collection must be valued at fair market value as of the date of death, documented by a qualified appraiser rather than estimated from catalogue or insurance figures.
Read the guide →Stamp Appraisal Scams to Avoid
Most stamp appraisal scams are not outright theft but inflated certificates, pointless fees, or offers dressed up as expert opinions, and each one has a recognisable pattern you can check for before you pay or sell.
Read the guide →Is a Stamp Collection Worth by Weight? The Real Answer
Weighing a stamp collection cannot tell you what it is worth, because value depends on which individual stamps are inside rather than how much the whole thing weighs.
Read the guide →Faded Stamp Value: What Light Damage Really Costs
Faded stamp value is nearly always lower than an identical stamp with its original color intact, because fading is irreversible and buyers price it as permanent damage rather than character.
Read the guide →Torn Stamp Value: What a Tear Really Does to the Price
A torn stamp is almost always worth a small fraction of a sound copy, and the article explains why tears are treated so harshly, how to check for one, and the rare situations where a torn stamp still has meaning.
Read the guide →Thinned Stamp Value: How to Spot a Thin and What It Costs
A thinned stamp keeps its identity but loses most of its premium value because a thin is permanent, irreversible damage to the paper itself.
Read the guide →How Humidity Ruins Stamp Value (Keep It at 40–55%)
Humidity is one of the quietest ways a stamp loses condition, and condition is what determines value, so controlling moisture matters more than most collectors realise.
Read the guide →Stamp Collecting Forums for Selling Advice: Do They Help?
Stamp collecting forums are genuinely useful for identifying a stamp and sanity-checking a price, but they cannot appraise, authenticate, or sell your stamps for you.
Read the guide →How to Price Stamps for Sale: A Realistic Method
Pricing stamps for sale means grading honestly, checking recent sold prices for the same catalogue number and grade, and setting an asking price below catalogue rather than at it.
Read the guide →How to Negotiate With a Stamp Dealer
Negotiating with a stamp dealer works best when you arrive already knowing your stamps' identity, condition, and realistic market range, rather than trying to argue a number upward on the spot.
Read the guide →Where to Sell Stamps: eBay, Local Dealers or Auction?
The best marketplace for selling a stamp collection depends on the collection's value and size, not on which platform advertises the loudest, so most sellers do better splitting high-value items from bulk material rather than dumping everything in one place.
Read the guide →Stamp Collection Insurance Value: What Number to Use
Insuring a stamp collection means finding a realistic replacement figure rather than the inflated total of catalogue values, and most collections are too modest to need a separate policy at all.
Read the guide →Soaking a Stamp Off an Envelope: Does It Lower Value?
Whether removing a stamp from its envelope hurts its value depends entirely on whether the envelope, the cancel, or a rare underlying variety is where the real value was sitting.
Read the guide →How to Store Stamps to Prevent Damage and Keep Value
Storing stamps well means controlling light, humidity, and handling, and avoiding the small habits — hinges, tape, self-adhesive album pages, damp basements — that quietly destroy the condition a stamp's value depends on.
Read the guide →Selling Stamps at Auction vs Online: Which Pays More?
Whether auction or online selling pays more for stamps depends almost entirely on how scarce and valuable the material is, with auction suiting higher-value or specialist items and online marketplaces suiting common, lower-value volume.
Read the guide →Stamp Auction Consignment Fees Explained
Stamp auction consignment fees combine a seller's commission with smaller lotting, insurance and photography charges, so the amount that reaches you is meaningfully less than the hammer price.
Read the guide →How to Choose a Stamp Auction House
Choosing a stamp auction house only matters if your collection has enough scarce, high-grade material to justify the process, and the right house is the one whose specialty and buyer base actually match what you own.
Read the guide →Why Is My Stamp Worth Less Than Catalogue Price?
Catalogue prices are a reference for top-grade retail asking prices, not a promise of resale value, and condition, gum, and demand almost always pull a real stamp's worth well below the number printed next to it.
Read the guide →Perforation Gauge and Stamp Value: Why It Matters
Perforation gauge — the spacing of the holes punched around a stamp — can separate a common variety from a scarce one worth far more, but only alongside genuine condition and demand.
Read the guide →Stamp Centering Value Impact: Why It Matters So Much
Centering is one of the biggest single factors in what a stamp actually sells for, often outweighing rarity, and this article explains how to judge it and why grading services exist to certify it.
Read the guide →Mint vs Used Stamp Value: Which Is Worth More?
Mint stamps generally carry higher catalogue value than used ones, but the actual gap depends on gum condition, cancel quality, and whether the stamp is common or scarce.
Read the guide →Local Stamp Club Appraisal Day: What to Expect
A local stamp club appraisal day gives a free, informal opinion on what your stamps might be worth, but it works best when you bring an organized collection and realistic expectations.
Read the guide →Video Call Stamp Appraisal: What It Can Actually Tell You
A video call appraisal can quickly sort likely-common stamps from ones worth a closer look, but no camera can substitute for holding the stamp under magnification.
Read the guide →Stamp Appraisal by Mail: How It Works and What to Send
Mail-in stamp appraisal is worth the cost and risk mainly for stamps you already suspect are scarce and in good condition, not for a general accumulation.
Read the guide →Online Stamp Appraisal Service: What You Actually Get
An online stamp appraisal service can flag which stamps in a collection deserve attention, but only a paid expertising service can certify that a valuable stamp is genuine.
Read the guide →Is It Worth Getting Stamps Appraised?
A paid appraisal is worth it only for the small number of stamps that are potentially scarce, genuine, and valuable enough to justify the cost of certifying them.
Read the guide →Find Stamp Value Free: What Actually Works
Free tools can identify a stamp and point you to a catalogue reference, but no free method replaces careful grading and an honest sense of demand.
Read the guide →Are First Day Covers Worth Anything?
Most first day covers were made in quantity for collectors and kept carefully by all of them. That combination is the opposite of scarcity.
Read the guide →Free Stamp Appraisal: What You Can Get, and What You Cannot
Free opinions are genuinely useful for triage and genuinely unsuitable for probate, insurance or selling a rarity. The difference is worth knowing before you ask.
Read the guide →Valuable British Stamps: What's Actually Worth Money
Britain printed the world's first stamp and then printed a great many of them. Fame and scarcity are not the same thing here.
Read the guide →The Most Valuable US Stamps — and What They Teach You
The famous American rarities all became rare the same way. Knowing how is more useful than knowing the list.
Read the guide →Stamp Condition and Grading: The Factor That Decides the Price
The same stamp in two conditions can differ in price by a factor of fifty. Grading is not a formality — it is most of the valuation.
Read the guide →How to Sell a Stamp Collection Without Losing Money
The route you choose matters less than the sorting you do first. Unsorted collections get bought at the price of their most common contents.
Read the guide →Stamp Errors Worth Money: What to Look For
Printers catch almost every mistake. The few that reach the counter are scarce by construction — and they are not always old.
Read the guide →You've Inherited a Stamp Collection. Now What?
Most of the value lost from an inherited collection is lost in the first week, by someone trying to be helpful.
Read the guide →Are Old Stamps Worth Money? Why Age Is the Weakest Signal
A stamp from 1935 can be worth cents and one from 1985 can be worth thousands. Age is the least useful thing you know about a stamp.
Read the guide →Stamp Value Calculator: What They Can and Cannot Tell You
Any tool that gives you one number for a stamp is hiding the assumption that does the work. Here is what that assumption is.
Read the guide →What Are My Stamps Worth? Valuing a Whole Album or Box
In a typical album, a handful of stamps carry nearly all the value. Here is how to find them before you sell the lot.
Read the guide →How Much Is My Stamp Worth? The Honest Answer
Condition decides more than age, and catalogue value is not what anyone will pay you. Here is how a stamp is actually priced.
Read the guide →Or just photograph the stamp
StampWorth identifies the stamp, grades its condition and gives a market-value range in about ten seconds. Free on iPhone and Android.