Sumatra. East Coast. Dai Ni Hon overprint in frame in black, violet, red or orange (no. 821o-71), types 821 and 822 on 40 mainly different unused or used stamps. Some signed Boekema. Ca. € 500

Sumatra. East Coast. Dai Ni Hon overprint in a wavy frame type 830 (several types 831/834), all in black except for one red (no. 832r-42) on 30 different, mainly unused stamps. 7½ cent no. 830v-81a not listed, 2½ cent no. 832z-67 with inverted overprint, 4 cent no. 830z-20a crease (? 12). Some signed Boekema. Ca. € 400

Sumatra. East Coast. 2 Cent Kreisler with purple Dai Ni Hon overprint in straight frame in combination with black Dai Ni Hon overprint in a wavy frame no. 833z/821p-16b, unused. Not listed

Sumatra. East Coast. 5 Cent Kreisler perforated 11¾ : 12¼ with black Dai Ni Hon overprint in a wavy frame no. 834z-21bv, cancelled. € 140

Sumatra. West Coast. Large Dai Ni Hon Yubin overprint in violet or black in combination with violet or black cross overprint, used in the West Coast and Riouw, unused or used, on 12 stamps type Kreisler. Signed Boekema

Sumatra. East Coast. 3½ Cent postcard with black Dai Ni Hon overprint type 813 Bu.160 from Medan 18.6.14 to Bandongan near Magelang (Java). Censor Bu.JC14c

Sumatra. East Coast. 3½ Cent postcard with reply-paid card attached not in offset but in rotogravure print (by Joh. Enschede & Sons, Haarlem), with black Dai Ni Hon overprint in a wavy frame type 832, unused. Signed Boekema. Very rare card!

Sumatra. Tapanoeli. Hinomaru overprint in fine type 211 and coarse type 221, in red, orange or purple on a nice selection of 34 mostly used stamps types Kreisler (amongst others no. 221p-22a unused), Van Konijnenburg (such as no. 221o-53k), Numeral and Dancer. Some signed Boekema. Ca. € 800

Sumatra. Tapanoeli. 10 Cent Van Konijnenburg with violet Hinomaru overprint no. 221v-43bg, used. € 150

Sumatra. Tapanoeli. 2½ Cent Kreisler and 7½ cent Dancer both with Hinomaru overprint nos. 221r-17b and 211p-71, on piece cancelled Taroetoeng 17.9.25 with censor Bu.JC13a. € 60

Sumatra. Tapanoeli. 10 Gulden Van Konijnenburg with red Hinomaru overprint no. 221p-57, unused. Signed Boekema. Rare stamp! Cert. ´Van Dieten, 2019´. € 900

Sumatra. Tapanoeli. Dai Ni Hon overprint type 811 in combination with Hinomaru overprint, unused nos. 811r/211r-15b, 16b, 811z/211p-19a (unlisted), 811r/211r-70 and used nos. 811z/211o-28b (unlisted, c.t.o.), 811z/221o-43II (unlisted), 811z/221p-48 (c.t.o.). Some signed Boekema

Sumatra. Tapanoeli. Dai Ni Hon overprint in frame on Japanese stamps nos. 821z-J4, 821v-J44, 821v-J10 (signed Boekema), 821r-J13 and 821v-J14, all used. € 308

Sumatra. Tapanoeli. Dai Ni Hon overprint in frame on Malayan stamps with Malayan overprint nos. M17/19, all used

Sumatra. West Coast. Large Dai Ni Hon Yubin overprint in violet or black in combination with violet or black cross overprint, used in the West Coast and Riouw, unused or used (50 cent used in the Republic), on 15 stamps (including 1 pair) type Van Konijnenburg. Signed Boekema

Sumatra. Tapanoeli. Handstamped T-overprint in combination with Hinomaru overprint on 3½ cent Kreisler no. 918z/221r-19a (signed Boekema), 25 cent Van Konijnenburg no. 912z/221p-47 and 2 gulden Van Konijnenburg no. 912z/221p-55g, all cancelled. € 410