Could you be sitting on a fortune in old US stamps? While most American stamps are worth only face value, some can fetch thousands or even millions of dollars. Here are the 25 most valuable US stamps to look for.
The Million-Dollar Club
1. Inverted Jenny (1918)
Value: $1,000,000 - $2,000,000
The most famous US stamp error. A sheet of 100 stamps was printed with the airplane upside down. Only 100 exist. Look for Scott #C3a.
2. Benjamin Franklin Z-Grill (1868)
Value: $2,000,000 - $3,000,000
Only 2 known examples exist. The "Z" grill pattern is extremely rare. Scott #85A.
3. Hawaiian Missionaries (1851)
Value: $500,000 - $2,000,000
First stamps of Hawaii. The 2-cent blue is the rarest. Used by missionaries to send letters home.
High-Value US Stamps ($10,000+)
| Stamp | Year | Scott # | Value |
|---|---|---|---|
| 1847 10c Washington | 1847 | 2 | $15,000-$200,000 |
| 1847 5c Franklin | 1847 | 1 | $10,000-$150,000 |
| 1869 24c Inverted Center | 1869 | 120b | $25,000-$100,000 |
| 1869 30c Inverted Flags | 1869 | 121b | $50,000-$200,000 |
| Pan-American Inverts | 1901 | 294a-296a | $15,000-$100,000 |
| $5 Columbian | 1893 | 245 | $2,000-$15,000 |
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4. 1867 Grills
Value: $500 - $50,000
Stamps with embossed grill patterns. The rarer grill types (A, B, C, D, Z) are most valuable.
5. Confederate States Stamps
Value: $50 - $10,000
Stamps issued by the Confederate government during the Civil War. Look for locals and provisionals.
6. 1857-1861 Issue Imperforates
Value: $200 - $5,000
Early stamps without perforations. Value depends on margins and condition.
7. 1893 Columbian Exposition Set
Value: $100 - $15,000
Complete set of 16 stamps. Dollar values are most valuable. Mint never-hinged commands premiums.
8. 1898 Trans-Mississippi Exposition
Value: $50 - $5,000
$1 Western Cattle in Storm is the key stamp. Beautiful designs depicting Western scenes.
Affordable Valuable US Stamps ($50 - $500)
| Stamp | What to Look For | Typical Value |
|---|---|---|
| Washington-Franklins (1908-22) | Coils, flat plate printings, rare perfs | $50-$500 |
| Prexies (1938) | $5 Coolidge, coil line pairs | $50-$200 |
| Liberty Series (1954) | $5 Hamilton, coil errors | $50-$150 |
| Famous Americans (1940) | Complete mint set | $50-$100 |
| Airmail Inverts | Any inverted center airmail | $100-$500+ |
Modern US Stamps Worth Money
Most modern stamps aren't valuable, but these exceptions exist:
CIA Invert (1985)
Value: $10,000 - $25,000
$1 Candleholder with inverted engraving. Discovered by a CIA employee. About 95 exist.
Bugs Bunny Pane Error (1997)
Value: $500 - $1,000
Die-cutting omitted error. Stamps are imperforate.
Upside Down Airplane (2013)
Value: $50,000 - $100,000
Intentional re-issue of Inverted Jenny. 100 sheets with inverts hidden in normal sheets.
How to Identify Valuable US Stamps
- Check the Year - Pre-1900 stamps are most likely valuable
- Look for Errors - Inverts, missing colors, wrong perforations
- Examine Condition - Mint stamps worth 5-10x more
- Identify the Issue - Use Scott Catalog numbers
- Verify Authenticity - Rare stamps should be expertized
Where to Sell Valuable US Stamps
- Major Auction Houses: Siegel, Kelleher, Cherrystone
- Online: eBay, HipStamp, Delcampe
- Dealers: APS dealer network, local stamp shops
- Shows: ASDA shows, APS StampShow
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