Eagle City Post, 1850 (1¢) blue on bluish. Large margins, affixed across flap on reverse of 1850 printed Pennsylvania Rail Road Co. notice, addressed locally from the George W. Carpenter correspondence, tied by red "Strait's Despatch Post, At Adams Exp'rss & 48 S. 3d St., Paid" circular handstamp with additional strike on front; stamp with sealed vertical tear from opening, otherwise F.-V.F., an extremely rare tied on cover usage of the blue 1¢ Eagle City Post adhesive. Scott No. 61L4  $6,500. $0 (Image)

Eagle City Post, 1850 (1¢) blue on bluish. Vertical pair, without gum, large margins, Extremely Fine, a rare multiple, accompanied by black on yellow company ad label. Scott No. 61L4  $350 for singles. $0 (Image)

Eagle City Post, 1850 (1¢) blue on bluish. Block of 4, without gum, clear margin to just in at bottom, bottom left stamp showing plate crack at bottom left, faint vertical crease in left pair only visible in fluid, F.-V.F., the only recorded block of the small Eagle Post issue, ex Hall; signed Sloane, Stern, with 2001 P.F. certificate. Scott No. 61L4  $1,150. $0 (Image)