1. Identify it
Confirm the country, issue, year, denomination, watermark and perforation.
26 illustrated value references
Stamp value guide: what are my stamps worth?
A stamp's value depends on exact identification, authenticity, condition, rarity and buyer demand. Use these references as a starting point, not as a guaranteed price or professional appraisal.
How to Find a Stamp's Value
2. Check authenticity
Look for forged overprints, repairs, reperforation and altered gum.
3. Grade condition
Centering, color, gum, tears, thins and stains can change value sharply.
4. Compare like with like
Use comparable examples in the same condition and note whether prices are asking or sold prices.
Most valuable stamps in the world
The full ranked list, from the $8.3 million British Guiana 1c Magenta down.
Open the guideMost valuable US stamps
America's top rarities ranked, plus what fills out the top 50 lists.
Open the guideRare stamps wanted by collectors
What buyers actively look for, and how to check your stamps before selling.
Open the guideFamous High-Value Stamp References
These values describe particular examples or condition levels. A similar-looking stamp may be a common printing or worth far less.
1
British Guiana 1c Magenta
British Guiana • 1856
$8.3 million
The British Guiana 1c Magenta is considered the world's rarest stamp, with only one known copy in existence. This humble-looking stamp holds the record as the most expensive stamp ever sold.
Extremely Rare
2
Inverted Jenny
United States • 1918
$1.35 million
The Inverted Jenny is America's most famous error stamp, featuring an upside-down Curtiss JN-4 'Jenny' airplane. Only 100 copies exist, making it one of the world's most valuable stamps.
Extremely Rare
3
Z Grill
United States • 1868
$3 million
The Z Grill is considered the rarest of all United States stamps, with only two examples known to exist. This 1¢ Benjamin Franklin stamp features a distinctive 'Z' grill pattern.
Extremely Rare
Browse All Stamp Value Guides
Open a guide to review identification details, condition factors and a clearly labeled reference estimate.
Penny Black
United Kingdom • 1840
$3,000-7,000
The Penny Black holds the distinction of being the world's first adhesive postage stamp, issued by Great Britain on May 1, 1840. This revolutionary stamp transformed postal communication and established the foundation of modern philately.
Scarce
Inverted Jenny
United States • 1918
$1.35 million
The Inverted Jenny is America's most famous error stamp, featuring an upside-down Curtiss JN-4 'Jenny' airplane. Only 100 copies exist, making it one of the world's most valuable stamps.
Extremely Rare
British Guiana 1c Magenta
British Guiana • 1856
$8.3 million
The British Guiana 1c Magenta is considered the world's rarest stamp, with only one known copy in existence. This humble-looking stamp holds the record as the most expensive stamp ever sold.
Extremely Rare
Treskilling Yellow
Sweden • 1855
$2.3 million
The Treskilling Yellow is Sweden's most famous stamp error, printed in yellow instead of the intended blue-green. This color error created one of philately's greatest rarities.
Extremely Rare
Mauritius Post Office
Mauritius • 1847
$1.6 million
The Mauritius 'Post Office' stamps are among the world's rarest, featuring the famous inscription error 'Post Office' instead of 'Post Paid' on these early colonial issues.
Extremely Rare
Basel Dove
Switzerland • 1845
$2.3 million
The Basel Dove represents one of the world's earliest stamps, issued by the Swiss canton of Basel. This charming design featuring a dove carrying a letter is among philately's most beloved classics.
Extremely Rare
Bull's Eye
Brazil • 1843
$2.8 million
Brazil's Bull's Eye stamps were the second stamps issued in the Western Hemisphere, featuring distinctive circular designs that gave them their popular nickname.
Extremely Rare
Hawaiian Missionaries
Hawaii • 1851
$750,000
The Hawaiian Missionaries are among America's rarest stamps, issued by the Kingdom of Hawaii before annexation. These stamps earned their nickname because many were found on letters written by missionaries.
Extremely Rare
Z Grill
United States • 1868
$3 million
The Z Grill is considered the rarest of all United States stamps, with only two examples known to exist. This 1¢ Benjamin Franklin stamp features a distinctive 'Z' grill pattern.
Extremely Rare
Cape of Good Hope Error
South Africa • 1861
$500,000
The Cape of Good Hope triangular stamps are among the world's most distinctive designs. Error varieties with inverted frames or misprints are extremely valuable.
Very Rare
Canada 12d Black
Canada • 1851
$350,000
Canada's first postage stamp, the 12 Pence Black featuring a beaver design, represents one of North American philately's most important issues.
Very Rare
Chinese Red Revenue
China • 1897
$889,000
The Red Revenue Large One Dollar is one of China's most famous stamps. This revenue stamp was provisionally surcharged for postal use, creating a rare and valuable variety.
Extremely Rare
Mauritius 2d Blue
Mauritius • 1847
$1.1 million
The 2d blue companion to the famous 1d Mauritius Post Office, equally rare with only 12 examples known to exist.
Extremely Rare
Baden 9 Kreuzer Error
Germany • 1851
$1.5 million
The Baden 9 Kreuzer printed in green instead of rose is one of the most famous German stamp errors and among the world's rarest stamps.
Extremely Rare
Two Penny Blue
United Kingdom • 1840
$1,500-8,000
Issued alongside the Penny Black on May 6, 1840, the Two Penny Blue was the world's second postage stamp and is highly collectible.
Scarce
Columbian Exposition
United States • 1893
$15,000-45,000
The $5 Columbian is the highest denomination from the famous 1893 Columbian Exposition series, America's first commemorative stamps.
Rare
Western Australia Inverted Swan
Australia • 1854
$80,000
Western Australia's famous Swan stamps include rare inverted frame errors that are highly prized by collectors.
Very Rare
Japanese Dragon Stamps
Japan • 1871
$25,000-150,000
Japan's first postage stamps featured dragon designs and represent the beginning of Japanese philately during the Meiji era.
Rare
Scinde Dawk
India • 1852
$50,000-200,000
The Scinde Dawk is considered Asia's first adhesive postage stamp, issued in the Scinde (Sindh) district of British India.
Very Rare
Three Skilling Banco
Sweden • 1855
$45,000
The Three Skilling Banco in orange is a rare color variety of Sweden's early stamps, sought by Scandinavian collectors.
Rare
French Ceres
France • 1849
$35,000
France's first postage stamps featured Ceres, the Roman goddess of agriculture. The 1 franc value is the rarest of the series.
Rare
Austrian Mercury
Austria • 1851
$28,000
Austria's first stamps featured Mercury and represent the beginning of Austrian philately under the Hapsburg Empire.
Rare
Spanish Isabella
Spain • 1851
$18,000
Spain's first postage stamps featured Queen Isabella II and marked Spain's entry into the modern postal era.
Scarce
Sardinian Horseman
Italy • 1851
$22,000
The Kingdom of Sardinia's stamps featuring an embossed horseman were the first issued in what would become unified Italy.
Rare
Russian Imperial
Russia • 1857
$16,000
Russia's first postage stamps featured the Imperial double-headed eagle and marked the beginning of Russian philately.
Scarce
Belgian Epaulettes
Belgium • 1849
$12,000
Belgium's first stamps featured King Leopold I with prominent epaulettes, giving these classic stamps their popular nickname.
Scarce
Condition Can Outweigh Age
Many old stamps are common. A sound, well-centered example with original gum may be more desirable than a rarer stamp with tears, thins, stains or repairs. Never clean a stamp to improve its appearance.
Authenticate Before a Significant Sale
Valuable varieties are frequently forged or altered. For a potentially important stamp, seek an established expertizing service, auction house or specialist dealer before buying, selling or insuring it.
How Much Are My Stamps Worth? FAQ
How much is my stamp worth?
It depends on exact identification, condition, and demand. First determine the country, year, denomination, and variety, then compare recent sold prices for the same stamp in similar condition. Most stamps are worth under a few dollars; scarce varieties and classic rarities can be worth hundreds to thousands. Scanning a stamp with StampSnap gives you an identification and an estimated value as a starting point.
Is there a free way to find stamp values?
Yes. You can compare sold listings at auction archives, use library copies of the Scott or Stanley Gibbons catalogs, or scan stamps with the StampSnap app, which is free to download and shows an estimated value insight per identified stamp.
What is the most valuable stamp in the world?
The British Guiana 1c Magenta of 1856, the only known copy of which sold for about $8.3 million. Our ranked list of the most valuable stamps in the world covers the full top tier with a guide for each stamp.
Why do two identical-looking stamps have different values?
Because value lives in details you cannot see at a glance: watermarks, perforation measurements, paper types, printing methods, and condition factors like centering and gum. One variety of a design can be common while another is a listed rarity - exact identification always comes before valuation.