cover 1840 (8 May.), L, margins all round (very large at right, a little close at top), neatly cancelled and tied to entire letter from London to Preston; pressed crease and the address panel with small red ink "9" in circle at lower-right. R.P.S. Certificate (1972) states "obliterated first day of issue" and while this usage has now been pre-dated it is still an extremely rare and famous cover. Photo