Belgian Congo 1908 Incoming Registered Envelope from Erlangen Bavaria (Cancelled 21 Sep) Bearing 40pfg Adhesive Sent to Missionary at Ngomo Congo via Anvers (24 Sep), Boma (14 Oct), Brazzaville (21 Oct), Matadi (5 Dec), Loanda Angola (12 Dec) & Ultimately Returned via Cape Town (25 Dec & 30 Dec) Arriving at Origin on 17 January 1909; VERY FINE & RARE (16-9975)