5 Cent numeral with lilac anchor overprint no. 20l-42 on complete M.O. Bu.JF41a from the very small sub-post office of Sangkoe- / Lirang 19.2.4.10 (type 010) to Samarinda 22.2.4.10. Rare (vNV.R). Ex Mattern

40 Cent Kreisler with lilac anchor overprint no. 20l-32b on M.O. Bu.JF41a (crease) from the small sub-post office of Tandjong- / Redeb 0.18.3.22 (type 010) via Tarakan with date '29 maart 1943' (type 332) and Bandjermasin 15.4.43.-9 to Barabai with hand-written date 16.4.03.4 (type 016). Ex Mattern

Official circular cachet in red with chop and typed 'Disahkan:' (= authorized) on M.O. Bu.JF41a from Tandjongredeb tg. 7-7-04 (hand-written name) via Tarakan 14.10.04 to the small sub-post office of Ngrambe 21.2.05.21 (Java). Rare! Ex Mattern

10 Cent van Konijnenburg with blackish violet anchor overprint no. 20v-43'bg on M.O. Bu.JF41a from Tarakan 31 MEI 1943 (type 332) to Ngandjoek 16.7.03.11 (Java). Censor Vr.212a. Ex Mattern

Postage Paid mark '20 + 2 kanji's' in bluish black from the second period Bu.JB75 type D on M.O. Bu.JF44a from Tarakan 12.3.05 to Bandjermasin (no pmk on the back)

50 CENT KREISLER WITH VIOLET ANCHOR NO. 43v-34a IN PAIR ON M.O. Bu.JF41a SHOWING BLACK ANCHOR OVERPRINT 43z CANCELLED DELIVERY HOUSE BENGKAJANG IN VIOLET (TYPE 071) WITH HAND-WRITTEN DATE 2604-7-29 TO PONTIANAK 2.8.04. CENSOR Bu.JC4 IN RED FROM PONTIANAK. AN EXTREMELY RARE POSTAL ITEM OF WHICH ONLY A FEW ARE RECORDED. EX MATTERN

80 Cent van Konijnenburg with violet anchor overprint no. 41v-53k on M.O. Bu.JF41a showing violet anchor overprint 41v from the small sub-post office of Nangapinoh 26.1.4.16 to Pontianak 4.2.04. Censor Bu.JC4 in violet from Pontianak. Ex Mattern

1 Gulden van Konijnenburg with violet anchor overprint no. 43v-54k (not perfect) on M.O. showing lilac anchor overprint 43r from Pamangkat -7.9.4.10 via Pontianak 10.9.04 to Singkawang 11.9.04. Censor Bu.JC4 in red from Pontianak

10 Cent van Konijnenburg with violet anchor overprint no. 41v-43" (2x) on M.O. Bu.JF41a showing violet anchor overprint 41v from the small sub-post office of Poetoessibau 21.7.04.9 to Pontianak 18.8.04. Censor Bu.JC4 in black from Pontianak. Ex Mattern

20 and 35 Cent Kreisler with violet anchor overprint nos. 41v-26b and 41v-31b (2x), 50 cent Kreisler with small violet anchor overprint no. 42v-34a and 60 cent van Konijnenburg with anchor overprint no. 41v-52k on M.O. Bu.JF41a from Sambas 9.10.4.5 to Pontianak 12.10.04. Censor Bu.JC4 in black from Pontianak. Nice franking!

2½ Cent Kreisler with violet anchor overprint no. 41v-17b in pair and 5 cent numeral with lilac South East Borneo anchor overprint no. 20l-42 on M.O. Bu.41a showing violet anchor overprint 42v from Sambas 13.5.4.3 via Pontianak 16.5.04 to Singkawang 17.5.04. Censor Bu.JC4 in black from Pontianak. Ex Mattern

25 Cent Kreisler with violet anchor overprint no. 41v-28b (3x) and 5 cent numeral with lilac South East Borneo anchor overprint no. 20l-42 on M.O. Bu.41a showing violet anchor overprint 41v from Sambas 12.6.4.12 to Pontianak 15.6.04. Censor Bu.JC4 in red from Pontianak. Ex Mattern

30 Cent van Konijnenburg with violet small anchor overprint no. 42v-48 on M.O. Bu.JF41a showing violet large anchor overprint 41v from Sambas 30.8.4.10 via Pontianak 2.9.04 to Singkawang 4.9.04. Censor Bu.JC4 in red from Pontianak. Ex Mattern

50 Cent and 1 gulden van Konijnenburg with violet small anchor overprint nos. 42v-51g (2x) and 42v-54g on M.O. Bu.JF41a showing violet large anchor overprint 41v from Sambas 31.8.4.3 to Pontianak 4.9.04. Censor Bu.JC4 in red from Pontianak. Ex Mattern

10 Cent van Konijnenburg with black anchor overprint no. 41z-43" in pair and 60 cent with brownish lilac anchor overprint (showing parts of overprints from the neighbour stamps) no. 41r-52k on M.O. Bu.JF41a showing violet large anchor overprint 41v from Sambas 12.6.4.12 to Pontianak 15.6.04. Censor Bu.JC4 in red from Pontianak. Ex Mattern

20 Cent Kreisler with black anchor overprint no. 42z-27b, 40 cent and 50 cent both with violet anchor overprint nos. 41v-32b in pair and 41v-34a in pair on M.O. Bu.JF41a from Sanggau 12.12.4.17 to Pontianak 15.12.04. Censor Bu.JC4 in black from Pontianak. Ex Mattern