1923. NIGER. Beautiful and rare small registered envelope to Cousset Cton de Fribourg, Schweiz with 10 C + 30 C + 60 on 75 C all overprinted SOUDAN FRANCAIS and cancelled in Niger with: AGADEZ TERRITOIRE DU NIGER 29 DEC 23. Reverse arrival cancel in Schweiz: COUSSET (FRIBOURG) 4. II. 24. Very interesting and rare use of stamps from Soudan Francaise used in Niger.