Lot 80993 – 1922-37 1/2d Grey & Black showing variety “cleft rock” in two mint lower left corner marginal plate pairs

1922-37 1/2d Grey & Black showing variety “cleft rock” in two mint lower left corner marginal plate pairs, one mint nh from 1936 June printing (confirmed by plate number plug) with typical yellowed gum (only 500 sheets from this printing) and the other mint hinged from 1936 October printing with toned gum, attractive pair for the specialist (SG £150+)