Lot 50650 – 1972 Shackleton 1 1/2p Endurance mint n.h. imperforate right marginal

1972 Shackleton 1 1/2p Endurance mint n.h. imperforate right marginal, very fine and scarce variety, noted in Heijtz as only one sheet of 50 known and that « imperforate stamps could be working proofs rather than issued stamps »; cert. Heitz (2003) with image of the discovered sheet and this stamp’s position on the sheet (Heijtz 109v1, £500)