QV PERIOD INSPECTORS AND "INSTRUCTIONAL" MARKS: Mostly London 1840-76 inspector's stars (5 inc. one London "O" in centre type, Liverpool in black and 1858 blue? TPO). Inspectors' initials (7 inc. 1846 E with "RL" - Ride letter, red 1842 "L" in circle, 1850 "PS", etc). 1845 pair with red scalloped "SUN" cds, 8 varied London "TOO LATE"s, 1844 black London h.s. "1", etc. (24 covers & 2 fronts) Cross Reference: LONDON POSTAL HISTORY, INSTRUCTIONAL MARKS (Image)