Overprint KPI types S.T.2.11, S.T.2.21 and S.T.3.2 in red, orange, lilac (double), violet and black on 10 Neth. Indies postage dues (3 out of 10 only with Japanese Dai Ni Hon Yubin overprint) and on 8 Malayan stamps (some with and some without Japanese overprint), all cancelled of which some postage dues genuinely used

Overprint KPI types S.T.2.11 in black, red and violet on 4 stamps of which 1 pair 3½ cent Kreisler on piece with violet DENDA, type S.T.2.21 on corner block of 6 15 cent Kreisler and an unwritten envelope with 5 pairs of Japanese stamps, and type S.T.2.11 + S.T.2.22 on 10 (single and block of 4) and 30 cent Van Konijnenburg

Overprint KPI type S.T.2.11 in black on 3 cent Kreisler with Nippon MA overprint in block of 4 cancelled with Japanese cds Medan 20.12.19, type S.T.2.21 on 15 cent Kreisler with handstamped T-overprint in block of 15. Also interesting Red Cross form from Sibolga 8.5.48 concerning delivery of family news letters

Overprint KPI type S.T.2.21 in lilac on 10 cent Van Konijnenburg (9x) and 30 cent def. issue with type S.T.2.11 on registered cover from Loksumawe 26.7.46 (rare postmark!) with registration label Lhoseumawe to Bireuen 21.7.28 (Japanese date stamp = 28.7.46). Interesting and rare cover!

Overprint KPI type S.T.2.21 on 2 cent Kreisler with small violet Dai Ni Hon Yubin overprint on money order from Serbalawan 16.5.46 to Medan 19.5.46 and on 7½ cent Dancer with small violet Dai Ni Hon Yubin overprint in pair (1 pinhole) on home-made postcard from Pematangsiantar 2.8.46 to Kisaran

Overprint KPI type S.T.3.2 in black on Japanese occupation stamps, 1 gulden Van Konijnenburg with machine T-overprint in pair, 30 cent def. issue in corner strip of 5 with black ORI overprint, 40 cent def. issue in corner strip of 4 with black ORI overprint, 50 cent def. issue on piece cancelled Padang 25.-2.46 and on form bearing 1 cent def. issue in strip of 4 without overprint + 3 cent def. issue in pair from Solok 20.7.46 to Boekittinggi

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