The 10 Most Valuable U.S. Stamps

10. Stock Exchange Invert

9. CIA Invert

8. Pan-American Inverts

7. 1860 Stolen Pony Cover

6. Two-Cent Blue Hawaiian Missionary

5. 1869 Pictorials—Inverted Center Errors

4. ‘Blue Boy’ Alexandria Postmaster’s Provisional

3. Almanac Stamp of 1765 or 1766

2. 1847 Issue Block of 16 of Ben Franklin

1. The Inverted Jenny

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