SG D3a. 1960 Postage Due. 3d. on 1/2d. ‘Surcharge double’. Cert. SUM.

Papua New Guinea 1960 Queen Elizabeth II Postage Due.  3d. on 1/2d. emerald.  Variety, ‘Surcharge double’.  Superb unmounted mint condition.  Brandon Certificate No. 38,470 (2008).  VERY RARE.