1862 4D RED (SG80) LETTERED CK CONSTANT VARIETY "DEFECTIVE LETTER K" ON COVER. 1862 entire London to Paris with a fine used 4d lettered CK tied LONDON-W.C/21 duplex JY 2 62 clear of the very scarce constant variety "K AT LOWER RIGHT DEFECTIVE" (Spec J52d Cat £550 off cover). On front CALAIS transit mark 3 JUIL.62. Very scarce clean usage. (Ref 98637).
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