Great Britain SG 743va 1967 QEII Machins 1/6d. greenish blue & deep blue.  Block of 4.  Error, ‘Greenish blue omitted’.  SUM.

GREAT BRITAIN   

1967 Queen Elizabeth II Machins 1/6d. greenish blue and deep blue.  Block of four.  Error, ‘Greenish blue omitted’.  SG 743va  Superb unmounted mint condition (with normal for comparison). SCARCE.