# StampGo

> StampGo (listed as “Stamp Identifier : StampGo” on the App Store and “Stamp Value Stamp Identifier” on Google Play) is an AI stamp identifier app for iOS and Android that identifies a postage stamp from a photo and shows its country, year, denomination, history and estimated value.

- App Store (iOS): https://apps.apple.com/app/id6745737498
- Google Play (Android): https://play.google.com/store/apps/details?id=ai.stampidentifier.value.identify.stamp
- Price: Free to download on iOS and Android
- Each identification returns: country, year of issue, denomination, postal system and currency, a reference price range, a 1–10 rarity score and historical context
- Coverage: stamps from the USA, UK, Europe, Asia, the Middle East and beyond
- Collection: saved stamps with a running total value, plus scan history
- Developer: Muhammad Waleed
- Value estimates are guidance, not a certified appraisal

## Identify stamps

- [Free Stamp Identifier App: Identify Stamps by Picture on iPhone and Android](https://getstampgo.com/guides/free-stamp-identifier-app): Yes, free apps can identify a stamp from a photo. How they work, what a good one shows you, and how to get started with StampGo on iOS or Android.
- [How to Identify Stamps: Country, Year and Variety, Step by Step](https://getstampgo.com/guides/how-to-identify-stamps): Five checks identify almost any stamp: country, denomination, year, printing details and condition. Or get straight to the answer with a photo.
- [Stamp Condition Grades Explained: MNH, VF, Centering and Faults](https://getstampgo.com/guides/stamp-condition-grading): Centering, gum, faults and cancellations: the condition terms dealers use, what MNH and VF mean, and how much condition moves the price.
- [Stamp Catalogue Numbers Explained: Scott, Stanley Gibbons and Michel](https://getstampgo.com/guides/stamp-catalogue-numbers): How to read a Scott, SG or Michel number, what the letter prefixes mean, and why catalogue value isn't the price you'll get.

## Stamp values

- [What Are My Stamps Worth? How to Check Any Stamp's Value](https://getstampgo.com/guides/what-are-my-stamps-worth): The four steps dealers use (identify, grade, compare, verify), and how to run a stamp value lookup from a photo.
- [Are Old Stamps Worth Money? What Actually Makes Them Valuable](https://getstampgo.com/guides/are-old-stamps-worth-money): Most old stamps are common, but rarity, condition and demand make some very valuable. How to tell which kind you have.
- [How to Tell if a Stamp Is Rare: 7 Signs Collectors Look For](https://getstampgo.com/guides/how-to-tell-if-a-stamp-is-rare): Seven signs that separate rare stamps from common ones, the rare stamps collectors want, and how to get a quick rarity score.
- [Error Stamps Worth Money: How to Spot a Valuable Printing Error](https://getstampgo.com/guides/error-stamps-worth-money): Inverts, missing colors, imperforates and double prints: which printing errors are valuable, how to tell them from freaks and fakes, and famous examples.
- [Forever Stamp Value in 2026: What Your Forever Stamps Are Worth](https://getstampgo.com/guides/forever-stamp-value): Every Forever stamp mails a one-ounce letter at today's rate, 82¢ since July 2026. What that means for old stamps, and which ones collectors want.
- [Commemorative Stamps Value: Which Ones Are Worth More Than Face](https://getstampgo.com/guides/commemorative-stamps-value): Most commemoratives are worth face value. Here's which ones aren't, and why gold-foil “collector” stamps are worth even less than they look.
- [Plate Block Values: What a Plate Block Is and What It's Worth](https://getstampgo.com/guides/plate-block-value): The number in the margin explained: how to identify a plate block, and why the classic ones are worth a premium while modern ones aren't.

## Collections & selling

- [How to Value a Stamp Collection, Step by Step](https://getstampgo.com/guides/stamp-collection-value): Sort the collection, find the few stamps that carry the value, price the rest as bulk, and decide whether a paid appraisal is worth it.
- [Inherited a Stamp Collection? What to Do First, and What Not To](https://getstampgo.com/guides/inherited-stamp-collection): Keep it safe, find the few stamps that matter, get more than one offer, and decide whether to keep, sell or donate it.
- [How to Sell Stamps: Dealers, Auctions and Selling Online](https://getstampgo.com/guides/how-to-sell-stamps): Dealer, auction house or online marketplace? How to choose, what each costs, and the preparation that gets you a better price.
- [How to Start a Stamp Collection: A Beginner's Guide](https://getstampgo.com/guides/how-to-start-a-stamp-collection): Pick a focus, buy three cheap tools, and get stamps free from your own mail before you spend anything. A practical first month.
- [Stamp Collecting Supplies: What You Actually Need](https://getstampgo.com/guides/stamp-collecting-supplies): The three things every collector needs, when to upgrade to mounts and gauges, and the supplies that quietly ruin stamps.
- [How to Store Stamps So They Keep Their Value](https://getstampgo.com/guides/how-to-store-stamps): Cool, dry, dark and flat, in the right materials. The storage rules that decide whether a collection holds its value or quietly rots.
- [How to Remove Stamps From Envelopes Without Damaging Them](https://getstampgo.com/guides/how-to-remove-stamps-from-envelopes): The soaking method that works, the stamps that must never touch water, and why the hair dryer and microwave tricks are a bad idea.
- [How to Organize and Catalogue a Stamp Collection](https://getstampgo.com/guides/how-to-organize-a-stamp-collection): Sort by country and year, record six fields per stamp, and keep a backup. The system that makes insuring or selling a collection painless.
- [Where to Buy Stamps for a Collection Without Overpaying](https://getstampgo.com/guides/where-to-buy-stamps): Dealers, auctions, shows, marketplaces and club circuits compared, plus the checks that stop you buying fakes or paying catalogue prices.

## Values by country

- [US Stamp Values: What Old American Stamps Are Worth, by Era](https://getstampgo.com/guides/us-stamp-values): What American stamps are worth from 1847 to today, which eras hold their value, and how to look up any US stamp from a photo.
- [UK Stamp Values: What British Stamps Are Worth, from Victoria to Machin](https://getstampgo.com/guides/uk-stamp-values): What British stamps are worth by reign, from the Penny Black to the Machins, and which UK stamps are worth checking.
- [Canadian Stamp Values: Which Old Canada Stamps Are Worth Money](https://getstampgo.com/guides/canadian-stamp-values): What Canadian stamps are worth by era, from the 1851 Beaver to the 1929 Bluenose, and which Canada stamps are worth checking.
- [German Stamp Values: What Old German Stamps Are Worth](https://getstampgo.com/guides/german-stamp-values): From Bavaria's 1849 “Black One” to WWII and East Germany: which German stamps are worth money and which are common.
- [Chinese Stamp Values: Which Old Chinese Stamps Are Worth Money](https://getstampgo.com/guides/chinese-stamp-values): Qing dynasty dragons, Cultural Revolution issues and the 1980 Monkey: which Chinese stamps are valuable, and why fakes are a real risk.
- [Indian Stamp Values: Which Old India Stamps Are Worth Money](https://getstampgo.com/guides/indian-stamp-values): British India, the princely states and the 1948 Gandhi set: which Indian stamps carry real value, and which fill every album.
- [Australian Stamp Values: Which Old Australia Stamps Are Worth Money](https://getstampgo.com/guides/australian-stamp-values): Colonies, Kangaroos and King George heads: which Australian stamps are worth money, and why 1966 is the dividing line.

## Famous stamps

- [The Most Valuable Stamps in the World, and Why They're Worth So Much](https://getstampgo.com/guides/most-valuable-stamps): The seven stamps that set the auction records, what each one sold for, and the realistic signs of a valuable stamp in your own album.
- [Penny Black Value: What the World's First Stamp Is Worth Today](https://getstampgo.com/guides/penny-black-value): What a Penny Black is worth today, and how margins, plate, check letters and the cancellation change the price.
- [Inverted Jenny Stamp Value: The Story and Worth of America's Famous Error](https://getstampgo.com/guides/inverted-jenny-stamp): One sheet of 100, sold in 1918 for $24: what an Inverted Jenny is worth today, what the normal 24¢ Jenny is worth, and the 2013 reissue.
- [George Washington and Benjamin Franklin Stamp Values: What Yours Is Worth](https://getstampgo.com/guides/washington-franklin-stamp-values): Why the same-looking Washington or Franklin stamp can be worth 5 cents or $500, and how to tell which one you have.
- [Elvis Stamp Value: What the 1993 29-Cent Elvis Stamp Is Worth](https://getstampgo.com/guides/elvis-stamp-value): The best-selling US commemorative ever is also one of the most common. What an Elvis stamp is really worth, and the exceptions.
- [First Day Cover Value: What Your FDCs Are Worth, by Decade](https://getstampgo.com/guides/first-day-cover-value): Most first day covers sell for a few dollars. Which ones are worth more, from early covers to rare cachets, with values by decade.
- [Duck Stamp Values: What Federal Duck Stamps Are Worth](https://getstampgo.com/guides/duck-stamp-values): The hunting permit stamps collectors chase: why the 1934 first issue leads, what a hunter's signature does to value, and which years matter.

## FAQ

### How accurate is StampGo?

It depends on the photo and how much of the stamp is visible. Scan one stamp at a time, in good light and straight on. Treat the identification and value as a helpful estimate, and have rare or high-value stamps checked by an expert. See what are my stamps worth for how dealers price them.

### Is StampGo free?

Yes. StampGo is a free stamp identifier and stamp value app. It's free to download on the App Store for iPhone and on Google Play for Android.

### Which countries does StampGo support?

Stamps from around the world, including the USA, the UK, Europe, Asia and the Middle East. For country-by-country prices, see the US, UK, German and Chinese stamp value guides.

### Can StampGo identify old or inherited stamps?

Yes. Old and inherited stamps are one of the most common uses. Scan them one at a time so StampGo can read each design, then check which old stamps are worth money and which of the most valuable stamps they resemble.

### How do subscriptions work?

StampGo is free to download. Premium features come with an auto-renewing subscription, and the available plans and local prices are shown in the app before you buy. You can manage or cancel it at any time in your App Store or Google Play settings.

### How should I photograph a stamp for identification?

Lay one stamp flat on a plain background in even light. Hold your phone straight above it, let it focus, and keep all the perforations in the frame. Avoid glare, shadows and filters.

### Can StampGo guarantee a stamp's value?

No. StampGo gives an estimated value, not a professional appraisal or a guaranteed sale price. Watermarks, perforations, gum, repairs, authenticity and condition can need a physical inspection, and buyer demand changes over time.

### What should I do if StampGo can't identify my stamp?

Retake the photo in better light with the whole stamp visible, and don't clean the stamp. If it still isn't recognized, compare the inscription, currency, portrait, watermark and perforations with a stamp catalogue, or ask a reputable dealer.

### When do I need professional authentication?

When a stamp looks rare or valuable, might have an altered overprint, or is being insured or sold for a significant amount. Use a recognized expertizing service, an auction house or a specialist dealer.

## Optional

- [Full text of every guide](https://getstampgo.com/llms-full.txt): all guides as Markdown
- [About StampGo](https://getstampgo.com/about): who makes it and what the value estimates mean