Sumatra. Tapanoeli. 10 Gulden Van Konijnenburg with red coarse Hinomaru overprint no. 221p-57, unused. Signed Boekema. A rare stamp! Cert. Van Dieten (2020). € 900

Sumatra. West Coast. 25 Gulden Van Konijnenburg with black cross overprint no. 332z-58, cancelled Padang. Signed Boekema. Cert. Van Dieten (2019). A wonderful stamp! € 500

Sumatra. West Coast. Violet or black cross overprint for the West Coast and Riouw in combination with violet or black small Dai Ni Hon Yubin overprint on 21 used or unused stamps, amongst others the 5 gulden Van Konijnenburg no. 870v/330z-56. Most signed Boekema

Sumatra. West Coast. 25 Gulden Van Konijnenburg with violet Dai Ni Hon Yubin overprint in combination with black cross overprint no. 870v/330z-58, unused with sheet margin. The black spot on the right is not a perf missing but part of a black cross overprint. A delightful stamp! Cert. Van Dieten (2019). € 900

Sumatra. West Coast. Small or large Dai Ni Hon Yubin overprint in violet or black in combination with black standing ('Greek') cross overprint of Pajakombo, used or unused, on 7 stamps. Signed Boekema

Sumatra. West Coast. Japanese stamp 2+1 sen to commemorate the fall of Singapore no. J56 in block of four, cancelled Padang 15.5.50.-9.

Sumatra. Riouw. 50 Cent Kreisler with black Dai Ni Hon Yubin overprint in combination with black cross overprint of Bengkalis no. 881z/386z-34a, cancelled Bengkalis. Slightly stained, but a rare, unlisted stamp! Opinion SvL: the overprints and postmark are genuine. Ex Jacobs

Sumatra. Benkoelen. 2½ Cent Kreisler with black monogram overprint S of postmaster Soeleiman no. 381z-17b, cancelled Kepahiang 18.7.22.11. The stamp is in very fine condition, only a few copies are recorded. Opinion SvL: the overprint is genuine. € 500. Ex Jacobs

Sumatra. Benkoelen. 30 Cent Van Konijnenburg with black Star of David overprint no. 398z-48, cancelled Benkoelen. Opinion SvL: the overprint is genuine. € 300

Sumatra. Benkoelen. 40 Cent Kreisler with black Star of David overprint in combination with black Benkoelen cross overprint no. 398z/392z-32b, used. A rare stamp! Opinion SvL: the overprints are genuine. € 350

Sumatra. Benkoelen. 10 Gulden Van Konijnenburg with black large overprint Dai Ni Hon in straight frame no. 841z-57, cancelled. A rare stamp in wonderful condition! Opinion SvL: the overprint is genuine. € 300

Sumatra. Benkoelen. Selection of 36 different used and unused stamps (including 2 pairs) all with black and some violet large overprint Dai Ni Hon in straight frame nos. 841z and 841v, some signed Boekema. Cat. over € 1,075 (3 stamps with faults are not counted)

Sumatra. Benkoelen. 10, 17½, 60 and 80 Cent Van Konijnenburg, all four with combination of black large overprint Dai Ni Hon in straight frame and black pen cross overprint nos. 841z/391z-43bk, 45, 52k and 53k, cancelled but the 60 cent unused (not listed as unused). Ca. € 370

Sumatra. Benkoelen. 2 Gulden Van Konijnenburg with black large overprint Dai Ni Hon in straight frame in combination with black cross overprint no. 841z/394z-55g on m.o. piece, cancelled Tjoeroep 18.11.4.11. Scarce stamp in very fine condition! € 300

Sumatra. Benkoelen. 3½ Cent postcard type Kreisler with red 5 overprint, again re-valued with two violet 2 overprints Bu.78, 2 cent Kreisler without overprint adjacent, written in the little village of Toengkal on 6 April 2603, sent from Manna 18.7.4.10-11V to Djatinegara on Java. Very rare postcard. Ex Hiegentlich, Jacobs

Sumatra. Djambi. 5 Cent Numeral and 1 gulden postage due (Kolff printing) both with black overprint MA nos. 411z-42 (thin spot) cancelled Rantaupandjang-/Tabir (vNV. RR) and 411z-88b cancelled Moearatebo. € 350