(Fox News) – An extremely rare U.S. currency note from the late 19th century
is expected to sell for up to $3 million when it is auctioned next year.

The 1891 $1,000 Silver Certificate is the only bill of its kind believed to exist
in private hands, according to auction house Stack’s Bowers Galleries. Known
as the Marcy note, the bill features the portrait of former New York Governor
William L. Marcy, who served as a senator and as secretary of war under
President James Knox Polk.    

Stack’s Bowers Galleries notes that the Marcy note is sometimes considered
the “unicorn” of U.S. money thanks to its unique design. The bill, which has
an estimated pre-sale value of $2 million to $3 million, is being offered at
auction for the first time.

The note will be auctioned at the Whitman Spring Expo, which takes place in Baltimore between Feb. 28 and March 3.