GB 1911 ½d Green Used Variety Pair

Great Britain 1911 ½d Green Crown Wmk Die IA & IB VFU/FU VARIETY PAIR: (i) Partial Frame Breaks (NW: Inner Left & Outer Top) & (ii) 'White Blob Right of Left ½' which is a Possible Precursor to Kings Spec N1c. See Also Spec N2h. SG 321/325var