Sumatra. Benkoelen. Star of David overprint in black on 10 cent Van Konijnenburg no. 398z-43bk, cancelled Benkoelen, signed Boekema

Sumatra. Benkoelen. 50 Cent Kreisler with violet large overprint Dai Ni Hon in straight frame no. 841v-34a, cancelled Lebongtandai

Sumatra. Benkoelen. 10 Cent Van Konijnenburg with black large overprint Dai Ni Hon in straight frame in combination with black cross overprint no. 841z/394z-43g on money order fragment, beautifully cancelled Tjoeroep

Sumatra. Benkoelen. 1 Gulden Van Konijnenburg with black large overprint Dai Ni Hon in straight frame in combination with black cross overprint no. 841z/394z-54g, cancelled Tjoeroep

Sumatra. Benkoelen. Commemorative cancellation ´Second Anniversary of the Rebirth of Sumatra´, vNV type 426z on a censored 3½ cent postcard (2 pinholes repaired) from Tjoeroep 19.3.22 to Medan. So far the only example known to us

Sumatra. Djambi. Black overprint Nippon/MA on 2 cent Kreisler no. 421z-16b and violet overprint Nippon/MA on 2½ cent Kreisler no. 421v-17b, fine used

Sumatra. Djambi. 3½ Cent Kreisler with violet overprint Nippon/MA no. 421v-19a on piece, cancelled Moearatebo

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