Cape of Good Hope 1868 4d "FONR" for "FOUR", Rarity!

1868 Surcharges 4d on 6d deep lilac "FONR" for "FOUR" (SG 27b/SACC 22b). VF/U example on piece with neat BONC 22 cancellation leaving variety clear. A significantly underrated variety, the first such we have handled, a rarity. Photo-cert: Eichele BPB. (cv£700).