blue oval datestamp on yellow cover to Sacramento, "From Wells, Fargo & Co., Virginia City, N.T." cornercard at lower left, manuscript "By Pony", 1864 pencil docketing, original enclosure no longer accompanies but indicates this cover was sent free of charge from J.H. Latham to Dr. G.L. Simmons about investing in a silver mine, slightly reduced at right into express marking, very fine and possible the unique example of free franked Virginia City Pony Express mail, ex-Edwards