What is the rarest bill in the US?

The Rarest Bill in U.S. History: A True American Treasure

Among collectors and historians, one piece of American currency stands head and shoulders above the rest in terms of rarity and mystique: the 1890 Grand Watermelon $1,000 Treasury Note.

So named for the distinctive green lines on its reverse that resemble the stripes of a watermelon rind, this note is a legendary artifact of U.S. financial history. Printed during a time when high-denomination bills were used primarily for transactions between banks, the Grand Watermelon was part of the Treasury’s efforts to streamline large-scale monetary transfers. Yet despite an original print run of only 16,000 notes, fewer than a handful have survived the passage of time.

Today, only two confirmed examples are known to exist in private or institutional collections. Their scarcity, combined with their historical significance and unique appearance, makes them the holy grail of paper currency collecting. Auctions featuring such notes have drawn international attention, with estimates often reaching into the millions.

What adds to the allure is not just the bill’s rarity, but its story. The nickname “Grand Watermelon” wasn’t official—it emerged from public mockery of its unusual design. Yet that same design, with its large, ornate zeros and intricate green lattice pattern, now symbolizes a bygone era of American finance.

Owning a piece of this history isn’t just about wealth—it’s about connection to a fleeting moment in time. While most of us will never hold an original Grand Watermelon note, its legend endures in numismatic circles and beyond. In the world of rare U.S. currency, no other bill carries quite the same weight, wonder, or whimsy.