12c black vertical pair, with 3c ultramarine horizontal pair, postmarked with black grid cancellations, "Wellesborough Pa / Jul / 26" double-circle c.d.s., to Paris, France, red "New York Paid 6 / Jul / 27" credit datestamp and boxed "P.P.", blue "Cherbourg" 1869 c.d.s. ties 12c pair, filing fold just clear of adhesives, a fine and desirable double-rate cover.