Sumatra. Palembang. Signet ring overprint BST of postmaster Boestam in black, locally used in Sekajoe, on 30 cent Van Konijnenburg in pair no. 523z-48, unused

Sumatra. Palembang. Signet ring overprint BST of postmaster Boestam in black, locally used in Sekajoe, on 50, 60 and 80 cent Van Konijnenburg nos. 523z-51k, 52g and 53g, unused, 60 cent signed Boekema

Sumatra. Palembang. Signet ring overprint BST of postmaster Boestam in black, locally used in Sekajoe, on 80 cent Van Konijnenburg no. 523z-53g, unused, signed Boekema

Sumatra. Palembang. Signet ring overprint BST of postmaster Boestam in black, locally used in Sekajoe, on 2½, 4, 5 and 7½ cent Dancer nos. 523z-67, 69, 70 and 71, unused, except for the 7½ cent all signed Boekema

Sumatra. Palembang. Signet ring overprint BST of postmaster Boestam in black, locally used in Sekajoe, on 1, 5, 10, 15, 20, 30 and 40 cent and 1 gulden postages dues Indies printing nos. 523z-77b, 80b, 82b, 83b, 84b, 86b, 87b and 88b, unused, except for the 1 gulden all signed Boekema

Sumatra. Palembang. Signet ring overprint BST of postmaster Boestam in black, locally used in Sekajoe, on 15 cent postage due in combination with violet IPL overprint no. 523z/571v-83b on piece together with 83b (= without overprint) and 561z-77a 2x (only the 15 cent with overprints is without faults)

Sumatra. Palembang. Signet ring overprint BST of postmaster Boestam in black, locally used in Sekajoe, on 5 cent postage due in combination with violet IPL overprint no. 523z/571v-80a, used and signed Boekema

Sumatra. Palembang. Signet ring overprint BST of postmaster Boestam in black, locally used in Sekajoe, on 7½ cent postage due in combination with violet IPL overprint no. 523z/571v-81a, used and signed Boekema

Sumatra. Palembang. Signet ring overprint Z of postmaster Zakaria in black, used locally in Tandjoeng Enim, on 40 cent Kreisler no. 524z-32b, slightly toned, unused. A scarce stamp!

Sumatra. Palembang. Signet ring overprint Z of postmaster Zakaria in black, used locally in Tandjoeng Enim, on 10 and 30 cent, and 1 gulden Van Konijnenburg nos. 524z-43bk, 48 and 54k, unused, 10 cent signed Boekema

Sumatra. Palembang. Signet ring overprint Z of postmaster Zakaria in black, used locally in Tandjoeng Enim, on 30 cent Van Konijnenburg no. 524z-48, unused (crease)

Sumatra. Palembang. Signet ring overprint Z of postmaster Zakaria in black, used locally in Tandjoeng Enim, on 4 cent Kreisler together with faint violet IPL overprint no. 524z/571v-20b, unused. A rare stamp!

Sumatra. Palembang. Monogram overprint MN of postmaster Mohamad Noer in black, used locally in Moeara Klinggi, on 2½ cent Kreisler no. 532z-17b, unused

Sumatra. Palembang. Monogram overprint MN of postmaster Mohamad Noer in black, used locally in Moeara Klinggi, on 4 cent Kreisler no. 532z-120b, unused

Sumatra. Palembang. Monogram overprint SLM of postmaster Salim in black, used locally in Saroelangoenrawas, on 20, 25, 35 and 40 cent Kreisler nos. 533z-27b, 28a, 31b and 32b, all unused, 35 cent signed Boekema

Sumatra. Palembang. Monogram overprint SLM of postmaster Salim in black, used locally in Saroelangoenrawas, on 10, 15, 30, 50 and 80 cent, and 1 gulden Van Konijnenburg nos. 533z-43bk, 44, 48, 51k, 53k and 54k, all unused, 10 and 15 cent and 1 gulden signed Boekema