1925 series of four envelopes from the same correspondence from Adre (in Tchad province of French Equatorial Africa) after stamp stocks had been exhausted, the first is stampless, the second bears French "Sower" 25c. (3), the last two bearing Sudan 15m., all bearing or cancelled by "ADRE/TERRITOIRE DU TCHAD" c.d.s., two backstamped at Geneina. Complete with some interesting notes written by the recipient A.J. Arkell