Lot 50576 – 1972 British Polar Explorers 7 1/2p with ERROR GOLD OMITTED (Queen’s head) in mint nh lower right corner traffic block of four

1972 British Polar Explorers 7 1/2p Henry Hudson with ERROR GOLD OMITTED (Queen’s head) in mint nh lower right corner traffic block of four, very fine, Pierron records only 50 mint examples with this being the only recorded traffic light block, a desirable item for the collector of modern errors, incl. normal matching traffic block