1900 1/- on 6d purple on rose-red of Bechuanaland Protectorate, Type 2 Overprint (SG 14). VF/M large part OG example. Well-centered, fresh. A rarity as few copies remained unused. Photo-certs: Rendon & Eichele BPB: "A fresh, well centred and very rare stamp unused with very few known." (cv£7500). See additional image and of certificates below.