cover 1903 (Oct.) and 1904 (Nov.) 5m. stationery envelopes addressed in arabic from Khartoum and El-Obeid respectively, and 1914 (Jan.) similar envelope from Malakal to Khartoum, showing framed bi-lingual "NON RECLAME", framed bi-lingual "INTROUVABLE" and framed "UNCLAIMED" respectively. A rare trio