Sumatra. Palembang. Signet ring overprint Z of postmaster Zakaria in black on 40 cent Kreisler, 10 and 30 cent and 1 gulden Van Konijnenburg nos. 524z-32b (toned), 43bk (signed Boekema), 48 and 54k, all unused. € 345

Sumatra. Palembang. Signet ring overprint Z of postmaster Zakaria in violet on 20 and 25 cent Kreisler nos. 524v-27b and 28a, unused. € 300

Sumatra. Palembang. Signet ring overprint Z of postmaster Zakaria in violet on 5 cent Numeral no. 524v-42, cancelled Tandjoeng-/Enim. Rare stamp! € 400

Sumatra. Palembang. Signet ring overprint Z of postmaster Zakaria in violet on 15, 17½, 50, 60 and 80 cent and 2 gulden Van Konijnenburg nos. 44 (signed Boekema), 45, 51k, 52k, 53k and 55g (minimal scratch), all unused. € 1,075

Sumatra. Palembang. Signet ring overprint Z of postmaster Zakaria in black in combination with violet IPL overprint on 4 cent Kreisler no. 524z/571v-20b, unused. Rare stamp! € 500

SUMATRA. PALEMBANG. 5 CENT NUMERAL WITH BLACK SIGNET RING OVERPRINT RP OF POSTMASTER ROEWAN PANDJANG NO. 525z-42, LOCALLY USED IN PENDOPO, THIS COPY UNUSED WITHOUT GUM. ILLUSTRATED IN DAI NIPPON CATALOGUE ON p.252. EXTREMELY RARE STAMP! CERT. ´VAN DIETEN, 2019´. € 2,000

Sumatra. Palembang. Monogram overprint MSL of postmaster Mas Slamet in black, used locally in Batoeradja, on 35 cent Kreisler, 10 and 17½ cent and 1 gulden Van Konijnenburg nos. 531z-31b, 43bg (signed Boekema), 45 and 54k, all unused. € 370

Sumatra. Palembang. Monogram overprint MSL of postmaster Mas Slamet in red, used locally in Batoeradja, on 3½, 25 and 40 cent Kreisler, 15 cent Van Konijnenburg and 1 gulden postage due nos. 531r-19a, 28a, 32b, 44 and 88b, all unused, 15 and 40 cent signed Boekema. € 430

Sumatra. Palembang. Monogram overprint MSL of postmaster Mas Slamet in green, used locally in Batoeradja, on 20 cent Kreisler no. 531g-27b, unused. Rare stamp! € 500

Sumatra. Palembang. Monogram overprint MSL of postmaster Mas Slamet in violet, used locally in Batoeradja, on 7½ cent postage due no. 531v-81a, unused (corner crease). Not listed

Sumatra. Palembang. Monogram overprint MSL of postmaster Mas Slamet in violet, used locally in Batoeradja, on 40 cent postage due no. 531v-87b, unused. Not listed

Sumatra. Palembang. Monogram overprint MSL of postmaster Mas Slamet in black in combination with IPL overprint on 1 cent Kreisler no. 531z/551z-15a on piece, cancelled. Rare stamp! € 500

Sumatra. Palembang. Monogram overprint MSL of postmaster Mas Slamet in black in combination with IPL overprint on 2 cent Kreisler no. 531z/551z-16b, printed in fugitive ink, cancelled. Signed Boekema. Rare stamp! € 500

Sumatra. Palembang. Monogram overprint MSL of postmaster Mas Slamet in red in combination with IPL overprint on 4 cent Kreisler no. 531r/551v-20b, unused. Signed Boekema. Not listed. Very rare stamp!

Sumatra. Palembang. Monogram overprint MSL of postmaster Mas Slamet in black in combination with IPL overprint on 5 cent postage due no. 531z/571z-80a, cancelled Pendopo. The red pen cross means that the due could not be collected by the postman. Not listed. Very rare stamp!

Sumatra. Palembang. Monogram overprint MSL of postmaster Mas Slamet in black in combination with IPL overprint on 10 cent postage due no. 531z/561z-82a, cancelled probably in Lahat. Not listed. Very rare stamp!