PL.1B GREY-BLACK/1D RED MATCHED PAIR LETTERED RH (SG3/SG7). Good used 1840 1d grey-black pl.1b (SG3) lettered RH, four close to fine margins, minor corner bend cancelled black M.C. Matched with 1d red (SG7), cut into at right cancelled heavy black M.C. Both stamps clearly show 7 and 10 o'clock ray flaws.(Ref 94139).