#5. 1869 Legal Tender $500 Rainbow Bill
OldMoneyPrices.com Estimated Value: $1,450,000
The example above is in poor condition, but if it were better, it easily makes rank 5 of our top 10 most valuable banknotes. Like the $1,000, this is also a high denomination Rainbow note from 1869.
Picture on the left of the note is an allegorical figure, and the portrait to the right is President John Quincy Adams.
A very small amount of these notes were printed: 89,360. Of that number, there are only three known in existance today, making it one of the scarcest and most valuable banknotes.