Cape of Good Hope 1850 Despatch/Arrival Octagonals, Rare

c1850 COLESBERG to RICHMOND: Small format folded wrapper rated "4" in red manuscript bearing departure OCTAGONAL 57 of Colesberg (blurry impression, as usual for this Post Office) and excellent strike of Richmond OCTAGONAL 56 applied upon arrival. Most unusual DOUBLY STRUCK departure/arrival Octagonals thus. F-VF, rare.