Air mail overprint type II (20 mm with double point) in dark purple on 1/8 Menalek, 1 Menalek and 4 Menalek and pair 2 Menalek without overprint, on letter Addis Abeba 10.1.1930 to Londen, on reverse arrival Registered London 27 ja 30, rate for registered double weight letter, fine/very fine, very rare