cover REGISTERED MAIL: 1909 (2 Apr.) envelope registered to Natal (slight soiling) "per S.S. Avondale" bearing, on reverse, corner strip of three 1900 6c. cancelled by despatch and arrival c.d.s., the face with a good strike of the double-framed "R/MAURITIUS/POST LOUIS/No" handstamp struck in purple. A rare marking, very few being recorded. Photo