The most expensive philatelic item ever sold is the 1847 Mauritius “Post Office” Ball Cover, which fetched €10,027,800 (about $11.9 million) with buyer’s premium at a German auction on June 26, 2021; the most expensive single stamp is the British Guiana 1c magenta, sold for $9.48 million at Sotheby’s in June 2014. As of October 2026, this list ranks the ten highest verified prices paid for individual stamps and covers (envelopes carrying stamps), using the total paid by the buyer in US dollars.
Stamps are the smallest assets in the world of collecting, and some of them are the most valuable by weight. A rare stamp has no upkeep, no storage problem and no depreciation story. It has scarcity, and scarcity is what these ten sales are about.
The 10 most expensive stamps and covers ever sold
| Rank | Item | Price (USD) | Sale date | Sold at |
|---|---|---|---|---|
| 1 | Mauritius 1d “Post Office” Ball Cover | About $11.9 million | June 2021 | Christoph Gärtner |
| 2 | British Guiana 1c magenta | $9.48 million | June 2014 | Sotheby’s New York |
| 3 | Japan 500 mon inverted centre (1871) | About $5.4 to $5.6 million | June 2023 | David Feldman, Geneva |
| 4 | Inverted Jenny plate number block of four | Reportedly over $4.8 million | 2014 | Private sale |
| 5 | U.S. 1c Z Grill (1868) | $4.366 million | June 2024 | Siegel, New York |
| 6 | Mauritius “Bordeaux” cover | About $4 million | 1993 | David Feldman, Geneva |
| 7 | Mauritius “Bombay Cover” | About $2.7 million (€2.4 million) | 2016 | David Feldman, Geneva |
| 8 | Treskilling Yellow | About $2.3 million | 1996 | David Feldman, Geneva |
| 9 | Single Inverted Jenny | $2.006 million | November 2023 | Siegel, New York |
| 10 | Hawaiian “Missionary” cover | $1.9 million | November 1995 | Siegel, New York |
1. Mauritius 1d “Post Office” Ball Cover: about $11.9 million
In September 1847 the British colony of Mauritius issued two stamps reading “Post Office”: an orange-red one penny and a deep blue two pence. Only 500 of each were printed, and many went onto invitations for a ball hosted by the governor’s wife. The Ball Cover is one of three known invitation envelopes still carrying the one penny stamp.
It hammered at €8.1 million on June 26, 2021, and reached €10,027,800 with the buyer’s premium, bought by a European collector. That makes it the highest price ever paid for a single philatelic item.
How we valued it: total paid including buyer’s premium, converted at 2021 exchange rates, from the auction house’s own result.
2. British Guiana 1c magenta: $9.48 million
A single stamp, printed in 1856 in a colony that could not wait for its supplies from London, and the only one known. A 12-year-old Scottish schoolboy found it in 1873 among his uncle’s letters and sold it for a few shillings. It has since broken the world record for a single stamp four times.
The estate of John du Pont sold it at Sotheby’s New York on June 17, 2014, for $9.48 million with premium, in about two minutes. It sold again on June 8, 2021 for $8.307 million to the dealer Stanley Gibbons, which then offered fractional ownership to the public. The 2014 price is still the higher of the two.
How we valued it: total with buyer’s premium, the higher of its two modern sales.
3. Japan 500 mon inverted centre: about $5.4 million
Japan’s first stamps came out in 1871. On one sheet of the 500 mon value, the centre was printed upside down, and only one such stamp is known. It was auctioned in Geneva on June 3, 2023 for €5.4 million, the first time it had gone under the hammer since the 1970s. The pre-sale estimate was €4 to €5 million, and the buyer was a collector bidding by phone.
How we valued it: the headline result of €5.4 million, which is about $5.4 to $5.6 million depending on the exchange rate used; we could not confirm whether the figure includes the premium.
4. Inverted Jenny plate number block: reportedly over $4.8 million
In 1918 the US Post Office printed a 24 cent airmail stamp with the biplane upside down. One sheet of 100 reached the public, and the plate number block of four is the only one of its kind. The Mystic Stamp Company bought it in 2005 by trade for $2.97 million, then sold it in 2014 in a private deal reported as north of $4.8 million.
How we valued it: reported private sale price; no auction record exists, so treat it as approximate.
5. U.S. 1c Z Grill: $4.366 million
In 1868 the US post office experimented with grills pressed into stamps so cancellation ink would soak in. The Z-shaped grill was one of the trials, and only two one-cent stamps with it exist. One sits in the New York Public Library and cannot be sold. The other belonged to bond investor Bill Gross, who swapped an Inverted Jenny block for it in 2005.
It sold at Siegel in New York on June 14, 2024 for $4.366 million, more than doubling the previous US stamp record, as part of a Gross collection sale that totalled $19.2 million.
How we valued it: total with buyer’s premium, from the auction’s published results.
6. Mauritius “Bordeaux” cover: about $4 million
The Bordeaux cover is the only known envelope with both the one penny and two pence “Post Office” stamps, and it has been called the greatest item in all of philately. It sold from the Kanai collection through David Feldman in 1993 for a reported $4 million, a record in its day.
How we valued it: reported 1993 price, not adjusted for inflation.
7. Mauritius “Bombay Cover”: about $2.7 million
Another unique Mauritius cover, this one carrying one penny “Post Office” stamps. David Feldman sold it in 2016 for €2.4 million.
How we valued it: €2.4 million converted by us at roughly 2016 rates; the dollar figure is approximate.
8. Treskilling Yellow: about $2.3 million
Sweden’s 3 skilling banco stamp was meant to be green. One was printed in the yellow of the eight skilling stamp by mistake, and a young collector found it in his grandmother’s attic in 1886. Feldman sold it in 1984, in 1990, and again in 1996 for 2.88 million Swiss francs (about $2.3 million), each a world record at the time. It resold in 2010 for at least that much, with the final price kept secret, and has been privately held since 2013.
How we valued it: the 1996 result, the last public price.
9. Single Inverted Jenny: $2.006 million
Of the 100 inverted stamps, one has now passed the $2 million mark on its own. Siegel sold an example in November 2023 for a $1.7 million hammer price, or $2.006 million with an 18% buyer’s premium. It was a record for a single Jenny.
How we valued it: hammer plus premium, from the auction’s published result.
10. Hawaiian “Missionary” cover: $1.9 million
The Hawaiian Missionaries were the islands’ first stamps, printed in 1851 in small numbers for local mail. This envelope carries the only known cover using Hawaii’s 2c blue, plus a 5c blue and two US stamps. It sold from the Honolulu Advertiser collection at Siegel on November 7, 1995 for $1.9 million.
How we valued it: the 1995 total, not adjusted for inflation.
Records set in 2025 and 2026
The most recent verified record is the Z Grill in June 2024. We found no new world record for a stamp in 2025. In 2026 the biggest story was a stamp that did not sell: the Buccleuch Block, a block of Great Britain’s 1840 Two-Penny Blue, was offered by Siegel on May 28, 2026 at the Boston 2026 World Expo with an estimate of $5 to $7.5 million. It failed to meet its reserve and went unsold, so it does not appear in the ranking.
What drives these prices
- One of one. Most of these items are unique or close to it. Where a second copy exists, as with the Z Grill, the price still rises because the other one is locked in a library.
- A mistake with a story. A yellow stamp that should be green, a plane flying upside down, an inverted centre. Errors turn paper into a headline.
- Covers beat stamps. Four entries are envelopes. A cover proves where and when a stamp was used, which is worth more than the stamp alone.
- Collections, not single lots. Several of these came from famous collections sold whole, such as the Kanai Mauritius collection and the Gross US collection. A great name on the catalogue adds a premium.
Keep reading
- The assets that hold their value the longest: where rare collectibles sit among other stores of value
- Seven assets the rich use to preserve wealth: why passion assets like stamps appear in wealthy portfolios
The habits that let people afford this
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What is the most expensive stamp ever sold?
The most expensive single stamp is the British Guiana 1c magenta, sold for $9.48 million at Sotheby’s in June 2014. The most expensive philatelic item overall is the Mauritius Ball Cover at about $11.9 million in June 2021.
What is the most valuable US stamp?
The 1868 one-cent Z Grill, which sold for $4.366 million at Siegel in June 2024. The Inverted Jenny plate block reportedly changed hands privately for more than $4.8 million in 2014.
Why is the Inverted Jenny so valuable?
The plane on the 24 cent airmail stamp was printed upside down on a single sheet of 100. A single stamp reached $2.006 million in November 2023.
Did the Buccleuch Block sell in 2026?
No. It was offered on May 28, 2026 with an estimate of $5 to $7.5 million and failed to meet its reserve.
Are old stamps worth money?
Most are not. Value comes from rarity, condition and a story such as an error or a unique use. A common old stamp usually sells for a few dollars or less.
Which is the cheapest entry on this list?
The Hawaiian Missionary cover at $1.9 million, sold in 1995. Older sales are not adjusted for inflation, so today’s price for the same item would likely be higher.
How we put this list together
Items are ranked by verified sale price, using auction results and disclosed sales compiled in an internal valuation model. Prices are approximate and change over time as new information emerges.
Last updated: October 2026.
