Lot 71510 – 1967 British Bridges 4d printed on gummed side of paper error

1967 British Bridges group of varieties incl. 4d mint n.h. left block of eight printed on gummed side of paper error, 9d mint n.h. right marginal block of nine with dramatic doctor blade flaw, 9d mint n.h. block of four showing the downward shift of the gold (Queen’s head) and 1s6d showing a minor constant flaw R19/1 in mint n.h. lower corner pair.