to England, bearing 1a. and 4a. sharing a good strike of the "BRITISH./P.O./ZANZIBAR./B" duplex, Aden and arrival c.d.s. on reverse; fine. Photo" /> cover 1879 (Sept.) envelope<I> "Via Brindisi"</I> to England, bearing 1a. and 4a. sharing a good strike of the "BRITISH./P.O./ZANZIBAR./B" duplex, Aden and arrival c.d.s. on reverse; fine. Photo | Christie's