Stamp Appraisal: What a Stamp Collection Is Worth

The single most useful thing to understand before any appraisal: a catalogue value is a retail asking price for a stamp in Very Fine condition, not an offer for yours. Scott states plainly that its values are based on a grade of Very Fine unless otherwise noted, and that they reflect retail pricing derived from market analysis and reported sales from the previous year.

Two further details explain most disappointments. Scott applies a minimum value of 25 cents to most stamps, so a shoebox of four thousand common stamps "catalogues" at a thousand dollars or more while being worth a small fraction of that. And most stamps in most albums are not Very Fine: they are off-centre, hinged, toned or thinned, which moves them well below the listed figure.

A realistic way to read a catalogue is as a ranking rather than a price list. It tells you which stamps in your album are the ones worth looking at closely. What they will fetch is decided by condition, by how many other people are selling the same thing, and by how you sell.

These three things are different and get confused constantly.

• A verbal opinion is a dealer looking through material and telling you roughly what is there. It is usually free or cheap and is the right first step for an unknown collection.
• A written appraisal is a document stating an estimated value, used for insurance, probate, division of an estate or a charitable donation. The American Stamp Dealers Association describes an appraisal as an evaluation or estimate of the value of a collection and says that if you need a written one you should expect to pay the appraiser for their expertise, with the fee agreed before the work starts.
• An offer to buy is a dealer's own bid. It is not an appraisal, and a buyer has an obvious interest in the number being low.

A "free appraisal" advertised by a buyer is usually the third thing. There is nothing wrong with that as long as you know which one you are getting, and the protection is simple: get a second number from someone who is not buying.

The most expensive mistakes are made by owners trying to be helpful.

• Do not clean anything. Washing, erasing pencil marks or bleaching toned paper turns a saleable stamp into a damaged one.
• Do not repair anything. Tape over a tear, a trimmed edge or added gum all reduce value and are obvious to a specialist.
• Do not soak stamps off old envelopes. Nineteenth-century covers are usually worth more intact, and once the stamp is off the postmark, route and rate are gone with the paper.
• Do not remove stamps from album pages by pulling. Hinged stamps tear and thin. Leave the album as it is.
• Do sort roughly by country and keep the collection dry, flat and out of sunlight.

Then make a simple inventory: how many albums, roughly which countries, the earliest dates you can see, and photographs of anything that looks unusual. An appraiser can quote a fee far more accurately from that than from "a box of old stamps".

Each route trades speed against price.

Selling outright to a dealer is fastest and simplest. You get one payment, immediately, and the dealer's margin is built into the number because they carry the cost and risk of reselling. This suits mixed collections without standout items.

Auction consignment usually produces more for material with genuine rarities in it, because competing bidders set the price rather than one buyer. You pay a seller's commission, you wait for the right sale, and the result is uncertain. Auction houses generally want a certificate in place for anything expensive before they will take it.

Online marketplaces can work for individually identified stamps you are willing to list and post one at a time. They are poor value for bulk, and they put the whole burden of description and dispute handling on you.

One thing raises the result on every route: separating the handful of items that might be genuinely valuable and getting those certified, rather than selling the whole thing as an undifferentiated lot. Our guide to what makes a stamp valuable is the checklist for finding them.

For the great majority of stamps, a certificate costs more than the stamp is worth and is not needed. It becomes worth paying for when a stamp would be valuable if a specific claim about it is true: a scarce perforation, a watermark, a grill, an error, unused gum that has never been hinged, or a nineteenth-century classic.

In those cases the certificate is not a formality — it is the difference between a stamp you can sell at the higher figure and a stamp every buyer will discount because they have to take your word for it. Recognised expertising bodies include the Philatelic Foundation and the American Philatelic Expertizing Service in the United States.

Photograph a stamp and the app identifies it, which narrows down what you are holding before you decide whether anything in the collection justifies the fee. For a sense of what the top of the market actually pays, see most valuable stamps in the world.

Start with dealer associations rather than a general web search, because membership gives you somewhere to complain if things go wrong.

• American Stamp Dealers Association (ASDA), founded in 1914, has a Find A Dealer directory. Members agree to a Code of Conduct that includes correctly describing condition and grade, honouring their buying prices, not dealing in stolen or counterfeit material, and submitting disputes to arbitration.
• American Philatelic Society keeps a directory of its dealer members at stamps.org.
• Regional associations list dealers by state. The Midwest Stamp Dealers Association, for example, lists dealers in about 15 states, many marked as buying collections or doing appraisals.
• Stamp shows and local clubs let you show material to several dealers in one day.

Before you hand anything over, ask for references and check membership directly: the ASDA advises contacting the association to confirm that a dealer is a member in good standing.

The routes differ mainly in who takes the fee and how long you wait.

• Outright sale to a dealer: you get the agreed amount immediately and pay no fee (ASDA). The dealer's margin is inside the offer.
• Consignment with a dealer: the dealer sells for you. The ASDA advises getting an itemised receipt, setting a minimum price and agreeing payout terms before handing the collection over.
• Auction: the house takes a percentage of the sale price, and most will give a cash advance against the estimate when you consign (ASDA). As one published example, Warwick & Warwick in the UK charges 17.5% commission plus VAT, a total of 21% of the hammer price, with no separate charge for insurance, lotting, valuation or transport (warwickandwarwick.com, September 2026).
• APS StampStore: for members only. The society charges 35 cents per item submitted and a 25% commission on sales, with a $3 minimum item price (stamps.org, September 2026). It suits individually identified stamps, not bulk.

For quick cash, an outright sale is the only route that pays on the day. For a collection with genuine rarities, auction usually pays more after fees.

A first look is often free; a written appraisal usually is not. The ASDA says that if you need a written appraisal you should expect to pay the appraiser, and to agree the fee before the work starts. It also notes that most dealers and auctioneers waive the appraisal fee if you then sell the collection to them or consign it to their auction.

Some auction houses advertise free valuations with no obligation to sell; Warwick & Warwick is one. Whichever route you use, the same auctioneer recommends getting several professional opinions rather than relying on one.

An old stamp album is usually worth the few good stamps in it, not the book. Most albums are filled mainly with common 20th-century stamps, and those sell very cheaply: Mystic Stamp Company sells 100 different used US stamps for $1.00 (September 2026). A new printed album is not expensive either; H.E. Harris lists its Liberty album for 1847 to 1994 at $79.99.

What can make an album worth real money:

• Filled spaces in the early pages. An album whose 19th-century pages are well filled deserves a closer look than one that starts in the 1950s.
• Unused stamps with full, undisturbed gum. Catalogue values assume original gum, so hinged or regummed stamps sit well below the listing.
• Stamps still on envelopes tucked into the back of the album.
• Condition. Stamps glued or taped to the page, or stuck together by damp, are badly damaged.

Leave the stamps in place. Pulling hinged stamps off the page tears and thins them, and a dealer can judge an album faster as it is. Photograph a few pages, note the countries and the earliest dates, and use that for the first conversation.

Research and drafting were assisted by AI, and every price, date and number on this page was checked against the sources listed below. Auction results name the house and date; dealer prices are asking prices on the named website in September 2026.

Most of the work that decides whether an appraisal is worth paying for can be done free, in this order:

• Identify the country and issue of anything that looks old. Our guide to identifying a stamp's country and issue covers inscriptions you cannot read.
• Look up the catalogue number and value in a free online catalogue, as explained on our Scott catalogue numbers page, and remember that the listed value assumes a Very Fine stamp.
• Check condition honestly: centring, gum, thins, tears and heavy cancels. Our guide to what makes a stamp valuable shows how much each one matters.
• Separate the few candidates from the bulk. In most collections a handful of stamps carry nearly all the value.

PhilLens can speed up the first step: a photo gives the likely issue and a market reference range by grade. It is a sorting tool, not an appraisal, and a stamp that looks valuable still needs a dealer's opinion or a certificate.

The American Philatelic Society (APS) puts the cost of a formal appraisal at $75 to $250 an hour, and notes that appraisers usually concentrate on the higher-value items rather than common material. For a collection of mostly ordinary stamps, several free verbal opinions are usually a better use of money than a written appraisal.

Firms that appraise also separate the purposes. US Stamp Co., a San Francisco Bay Area dealer, offers fair market value appraisals and insurance appraisals for a fee, and a complimentary evaluation for people who want to sell; its fees are available on request. It will also visit homes. Because the two are done for different purposes, say which one you need when you ask for a quote.

The APS's guidance for heirs comes down to three steps: keep the collection safe, find out what it is worth, then decide whether to keep, give, donate or sell it.

• Storage: somewhere cool and dry, with albums standing upright rather than stacked flat.
• Help with valuation: dealers, local clubs and stamp shows. Check that a dealer belongs to the APS, the American Stamp Dealers Association or the National Stamp Dealers Association.
• Estate Advisory Service: for heirs of deceased APS members, the society may connect them with one of about 200 member volunteers who can look at the collection in person (contact the APS on 814-933-3803 ext. 205).
• Where to sell: public auction for items worth hundreds or thousands of dollars; stamp dealers for material in the $1 to $100 range.
• Offers: get more than one, and expect an offer to stay open for about 30 days.

The society's most direct advice is not to let anyone pressure you into a sale.

Postage stamp buyers are selective, and knowing what each one declines saves a wasted shipment. Three published examples:

• Dennis R. Abel, Stamps for Collectors (Savage, Minnesota): buys U.S. collections worth $5,000 or more, worldwide or single-country collections of $5,000 or more, high-quality singles, errors, postal history and dealer stocks. It does not buy common or lower-grade material, unorganised used stamps in envelopes, bags, boxes or tins, children's albums with fewer than a few thousand stamps, Postal Commemorative Society or Fleetwood promotional products, state duck stamps, modern first day covers from 1935 to the present, or foreign postage lots. It asks for photos by email and does not appraise by phone (drabel.com, September 2026).
• Mystic Stamp Company: says it buys all kinds of stamps and takes details, including photos of the collection, through an online form (info.mysticstamp.com, September 2026).
• American Philatelic Society: its Circuit Sales send members' stamps to other members, who examine them before paying; its StampStore on HipStamp is open to buyers anywhere. The society has run exchange services since it began in 1886 (stamps.org, September 2026).

• One or two stamps you think are rare: confirm the identification first, then an auction house or specialist dealer. Our most valuable US stamps page shows what the top of the market looks like.
• An organised collection worth thousands: a full-service dealer or an auction consignment, using the fee comparison above.
• Unused modern U.S. postage: Forever stamps never lose their postage value, so using them on mail returns the full face value; see our page on the Forever stamp price.
• Boxes of first day covers: expect lot prices, and check that the buyer takes modern covers; see first day cover value.
• Promotional sets from subscription companies: several dealers decline them outright, so ask before shipping.