Friedberg Unlisted (W-Unlisted). Circa 1860s $10 (Legal Tender Note). PCGS Currency Very Choice New 64. Essay Back Proof.Hessler-Unlisted. India paper. Imprint of American Bank Note Company. Obligation at center reads "SECURED BY THE PLEDGE OF THE UNITED STATES," an obligation that differs considerably from versions found on Demand Notes, Legal Tender and Interest Bearing issues. Ornamental outlined numeral X at left and right with encompassing geometric devices. The only such impression we are aware of and most likely unique. Unique, unlisted and in high grade. What more could be asked?From Lyn Knights sale of August 21-23, 2003, lot 2210 (unsold); Heritage Currency Auctions of Americas sale of September 21-22, 2001, lot 6630; Bowers and Merenas sale of the Ezra Cole Collection, January 23-25, 1986, lot 4011.