French Colonies Soudan 1926 Cover to French Morocco

Sudan. Envelope bearing Yvert 25, 15c black & yellow, Yvert 35, 2f gr; & blue and Yvert 37, 10c lilac & blue tb; Segou Soudan Francais double-ring, underpaid and bearing French Maroc Postage dues Yvert 29, 10c brown (3) and Yvert 32, 50c purple applied and tied on arrival by Casablanca Maroc datestamp. Nice combination. (pt)    ID: 32225