10-Dollars, Act of July 17th, 1861, American Bank Note Co. (Fr. 7; cf Hessler p. 36), payable at Philadelphia, green and black face Proof, with red serial number 00000, together with a green back Proof, both on india paper, mounted back to back with a thin card border, plate position A, punch cancelled four times along the signature lines, a small tear in the center of the left edge, otherwise very sharp and extremely rare