Overprint KPI types S.T.3.6 in black on Van Konijnenburg and S5 on 2 cent Kreisler on philatelic cover in very fresh condition, registered at Medan 19.12.46

Overprint KPI types S.T.5.1 in violet on unused 30 cent def. issue in block of 4, type S.T.5.2 in violet on 5 cent def. issue in strip of 6 cancelled Palembang 2.7.4.7, and S.T.5.2 in violet on 10 cent (4x) and 1 roepiah (2x) on addressee card for a package of 2.25 kg from Palembang 20.4.4.-6 to Loeboek-/Linggau 24.4.46, which is so far the only framed RI overprint on stamps on postal item

Overprint KPI type S.T.5.3 in violet on Van Konijnenburg stamps with machine T-overprint of 30 cent (2x) and 1 gulden (pair and single) on envelope made of used paper, registered from Soeroelangoen-/Rawas 2.11.46 to Palembang. Genuinely used on cover is rare!

Overprint KPI type S.T.5.4 in violet on 30 cent airmail in block of 4, postage dues of 2½, 7½ and 20 cent in pairs (1 copy without overprint) and on 10 cent Van Konijnenburg with machine T-overprint + 30 cent def. issue a roughly opened cover from Kajoeagoeng 19.10.46 to Palembang

Overprint KPI types S.T.5.5 in violet on 10 cent Van Konijnenburg with machine T-overprint in block of 4 and on 30 cent def. issue in block of 16, type S.T.3.5 without frame in violet on 2 cent Kreisler, 1 cent def. issue with red ORI overprint in pair, 20 cent def. issue with black ORI overprint in strip of 3, on 80 cent Van Konijnenburg with black large Dai Ni Hon Yubin overprint on piece with other 10 cent, cancelled 5.4.46, and type S.T.3.5 in frame in black on 5 and 7½ Dancer both in corner blocks of 6

Overprint KPI types S.T.6.1 in black on 3 stamps, S.T.6.2 in black on 3 stamps and S.T.5.4 in violet on 2 Neth. stamps and 3 blocks of 4 def. issue 1, 2 and 3 cent, and on 10 cent Van Konijnenburg with machine T-overprint and 30 cent + 1 roepiah in pair on address card for inland packages from Palembang 18.10.4.-6 to Loeboek-/Linggau 22.10.46

KPI S8a1 in 2 strips of 3 (few less fine) on a registered cover from Tebingtinggideli 14.2.47 to Serbalawan 27.2.47, showing registration label from Medan overstamped with a framed place name cancel Tebingtinggideli, violet censor mark Bu.RC30 and a most unusual censor label Bu.JCS1. Very important cover for any exhibition collection of the Revolution period of Sumatra

General Issues. Machine overprint Repoeblik Indonesia and new value on Kreisler stamps, several values and 40 sen types, on 3 singles with varieties, 60 sen on 2½ cent with IPL overprint in 1 block of 4 and on philatelic covers with inverted overprints of 40 sen and on another cover 80 sen

General Issues. 15 Sen in dark blue in perforated block of 4 and unperforated corner block of 6, and in green in perforated block of 4 and in yellowish green in imperforated block of 8

General Issues. 5, 15 and 40 sen on airmail cover together with Neth. Indies 10 and 15 cent in pair, cancelled Bataviacentrum 13.MR.47 to Hattem. The currency exchange rate at that moment looks like 60 sen Sumatra = 15 cent Neth. Indies, making up the total rate of 55 cent

General Issues. Surcharges with large ornament and new value. 5 sen red on 3 sen blue in complete sheet of 50, f 1.50 on 40 sen with inscription Fonds Kemerdekaan in pair cancelled 27.8.49 and f 2,50 on 40 sen with inscription Fonds Kemerdekaan in block of 4 with bottom imperforated

General Issues. Emergency Issue overprints on unfinished Japanese occupation revenues. f 2.50 in 2 rows of 10 = 20 (some 2.50, some 2,50), so far the largest block known

General Issues. Emergency Issue overprints on unfinished Japanese occupation revenues. Complete set on 3½ cent Kreisler Japanese occupation postcard with violet Republican overprints PTT/NRI in circle and REPOEBLIK INDONESIA/15 SEN. from Palembang 27.-5.-47 to Singapore. Rare postcard (Bu.RS54)

Philatelic cover bearing 8 different stamps with different overprints, registered Medan -1.6.46

5 Sen Japanese postcard bearing 2 pairs of Neth. Indies 7½ cent Dancer registered from Babat 23.8.05 to Soerabaja 23.8.05, the evidence that the Postal Services was still operated by the Japanese. Very rare usage of Neth. Indies stamps

40 Cent def. issue in block of 4 showing double perforation, cancelled Soerabaja 19.10.45, and 2 covers, one bearing 5 cent def. issue from Bandoeng 23.10.45 to Malang, another bearing Neth. Indies Dancers of 2½ (1x) and 7½ cent (5x) adviced and by express, showing Japanese censor, from Soerabaja 30.8.05 to Malang 31.8.0.5