1857 PL.52 STUDY OF EXAMPLES LETTERED AG (SG40). Unusual group of seven items all die 2 pl.52 rose-red on white paper L.C.14 (SG40) comprising three used singles, three singles on pieces dated 1860, 1861 and 1862 and a good used block of four lettered AG AH BG BH, some perf separation and vertical bend. Stamps to varying degrees show the constant variety "BLUR ABOVE G". (10 stamps) (Ref 99305).