French Colonies Mauritanie 1943 Military Mail

envelope sent to Algeria bearing Yvert 76, 5c orange (2) and Yvert 88, 1f 50 violet tied by St. Louis Senegal datestamp with military cachet 1st R.T.S. Le Vagumestre, sent Air Mail, underpaid with Algerian postage dues Yvert 5, 30c red, Yvert 7, 50c brown-lilac and Yvert 10, 2 franc lilac (pair) tied on arrival by Alger datestamp. Very attractive item. (pt)    ID: 15873