77, 1866 15c Black, single used alongside pair of 1861 3c Rose (65), each with blue negative six-point star cancel on 1867 cover to Milan, Italy, matching "Louisville Ky. Jul 23" datestamp, faint red New York "Paid 18" credit datestamp, red boxed "PD" and black French packet datestamp, backstamped Milan, very fine, a wonderful cover paying the 21c French Mail rate to Italy, 2022 Philatelic Foundation certificate