Montgomery, Alabama, "Paid 10 / T. Welsh",  clear strike partially obscured by 3c dull red, adhesive tied by blue grid cancel, alongside "Louisville KY / Aug 6" double-circle c.d.s., on clean North-South Express Cover to Northampton, Massachusetts, struck with choice "ADAMS EX. CO / LOUISVILLE KY / AUG / 6 / 1851" c.d.s. in black, manuscript "Paid Adc" in manuscript indicating payment of the Adams fee, cover with small repairs at right, light wrinkles, attractive and rare,  a very fine combined Postmaster's Provisional and Express Company usage; ex Haas.