What is the value of an un-circulated 1899 one dollar silver certificate?

The value of an uncirculated 1899 $1 Silver Certificate—commonly known as the "Black Eagle" note—ranges from $350 to over $15,000, depending on its grade, signature variety, and special features. Most uncirculated examples in collector grades (Gem 65–66) are valued between $1,000 and $3,000, with rare varieties and top-graded notes commanding significant premiums.

Direct Answer from Cliff's Auction ( rareusbanknotes )

An uncirculated 1899 one-dollar silver certificate typically sells for $350–$600 in lower uncirculated grades (MS 60–62), $1,000–$3,000 in Gem Uncirculated grades (65–66), and can exceed $6,000–$15,000 for the rarest, highest-graded examples (Superb Gem 67–68+). The exact value depends on the note’s grade, the specific signature combination (Friedberg number), and any special attributes such as star notes or unique serial numbers.