Sumatra. Djambi. Violet overprint Nippon/MA on 5 cent Numeral (4 copies, 2 on piece) no. 421v-42 and on 7½ cent Dancer (not recorded), all used

Sumatra. Djambi. Black overprint Nippon/MA on 10 and 15 cent Van Konijnenburg nos. 421z-43a (damaged) and 421z-44, on 4 cent Dancer no. 421z-69 (used) and violet overprint Nippon/MA in combination with violet overprint Dai Ni Hon Yubin on 7½ cent Dancer no. 871v/421v-71. All signed Boekema

Sumatra. Djambi. 50 Cent Van Konijnenburg with black overprint Nippon/MA no. 421z-51k, fine used

Sumatra. Djambi. Black overprint Nippon/MA on 5 cent Numeral and 7½ cent Dancer nos. 421z-42 and 421z-71 (not recorded), and violet overprint Nippon/MA in combination with violet overprint Dai Ni Hon Yubin no. 871v/421v-71, all unused

Sumatra. Djambi. 5 Cent postage due with violet overprint Nippon/MA no. 421v-80a on piece, cancelled Saroelangoen

Sumatra. Djambi. 5 Cent postage due with violet overprint Nippon/MA no. 421v-80a, cancelled Badjoebang. Signed Boekema

Sumatra. Djambi. 10 Cent postage due with violet overprint Nippon/MA no. 421v-82a (corner repaired), cancelled Saroelangoen

Sumatra. Djambi. 7½ and 25 Cent postage due with violet overprint Nippon/MA nos. 421v-81a and 85a, unused. Signed Boekema

Sumatra. Djambi. 25 Cent postage due with violet overprint Nippon/MA no. 421v-85a, two copies on piece cancelled Saroelangoen

Sumatra. Djambi. 30 Cent postage due with violet overprint Nippon/MA no. 421v-86b (brown spot), cancelled Badjoebang

Sumatra. Djambi. 40 Cent postage due with violet overprint Nippon/MA no. 421v-887b, cancelled Saroelangoen

Sumatra. Djambi. 10 and 20 Cent postage due with black overprint Nippon/MA nos. 422z-82a and 84a, both on piece cancelled Koeala-/Toengkal

Sumatra. Djambi. 2½ Cent postage due with black overprint NIPPON/MA no. 431z-78a on piece, cancelled Moearatebo

Sumatra. Djambi. 5 Cent postage due with black overprint NIPPON/MA no. 431z-80a on piece, cancelled Moearatebo

Sumatra. Djambi. 10 Cent postage due with black overprint NIPPON/MA no. 431z-82a on piece, cancelled Moearatebo

Sumatra. Djambi. 20 Cent postage due with black overprint NIPPON/MA no. 431z-84a, cancelled Moearatebo