1903 taxed envelope with enclosed letter from W.M. Wilkin an officer with the West African Frontier Force headed 'GUJIBA, 21/3/02' He was serving under Colonel Morland on operations in the Bornu, following the French incursions the previous year. The envelope addressed to London with charge marking on the front 'NORTHERN NIGERIA' c.d.s. on the reverse 'JU 6 1902' Plymouth transit and receiving cancellations.