Stamps & Covers Public Auction 362

1918-22 opt KGV ½d green LM wmk INVERTED, forme of 30 from 5th opt setting, Electro 5 pos L31-60 with 'CRACKED ELECTRO through left wattles' & again in 'kangaroo's nose' MNH (pos 5L46). An intermediate state of the crack, not illustrated in ACSC & not seen on stamps w/o NWPI opts. VF fresh 12M/18MNH, UR cnr blk of 4 was added from another pane. SG 119w cat £3900 as M singles & should be at least double, MNH £6240 = A$12,000, plus premium for wmk inverted cracked electro. An outstanding rarity & possibly unique multiple. (P)