Sumatra. East Coast. M11 (7 on front, 3 on the reverse) on M.O. Bu.JF1a from Kotapinang 19.3.11 to Tandjongbalei 19.3.15. Because stamps with the Queen were not allowed in the East Coast, stamp shortage appeared, hence ten 10c Malayan stamps were used

Sumatra. Tapanoeli. 10 Cent van Konijnenburg with Hinomaru overprint no. 221r-43II and with machine T overprint no. 922z-43II on slightly smudged M.O. Bu.JF1a showing framed Dai Ni Hon overprint 821v from Padangsidempoean 19.2.12 to Sibolga 19.3.14. Censor Bu.JC15

Sumatra. West Coast. 331z-56, 5 Gld Van Konijnenburg with black cross overprint, cancelled Padang 18.5.29.17. € 230

Sumatra. West Coast. 331z-57, 10 Gld Van Konijnenburg with black cross overprint, unused. € 140

Sumatra. West Coast. 331z-58, 25 Gld Van Konijnenburg with black cross overprint, cancelled Padang. € 850

Sumatra. West Coast. 870v/330z-58, 25 guilders Van Konijnenburg with violet small Dai Ni Hon Yubin overprint and black cross overprint, fine unused. € 900

Sumatra. West Coast. Cover bearing 3x 10c Van Konijnenburg 87v-43´bg (right part of envelope cut-off) tied by the delivery house pmk SERANTIH in violet, sent to and registered at Padang 19.2.23. Extremely rare delivery house with on the back in each corner a strike of this cancel (vNV.type 071, RRR)

Sumatra. West Coast. 3½ Cent postcard with Dai Ni Hon Yubin large overprint in black Bu.175a from Soengeipenoeh 18.10.29 to Padang. Censor Vr.312 from Padang

Sumatra. Riouw. 881r/386z-34a, 50c Kreisler with reddish-brown Dai Ni Hon Yubin overprint and Bengkalis cross. Very rare, only 3 copies recorded, all cancelled Bagansiapiapi. € 650

Sumatra. Benkoelen. Malayan stamp M3, 2c orange with red overprint, with black Dai Ni Hon overprint type 841z for Benkoelen, fine unused mint. Not recorded

Sumatra. Djambi. Postage dues 85a in pair and 88b in strip of three, all without overprint, nicely tied by Djambi 28.2.4 (type 050), on Telegraphic Money Order Account

Sumatra. Palembang. 522v/522o-16b, 2c Kreisler in pair with both violet and orange IPL signet ring overprint, cancelled Palembang 31.3.3.13. According to Vrijdag in order to find the right ink various colours were tried, and in this case the violet overprint is hard to see on the violet background, and the stamps were thus also overprinted in orange. Only two pairs are recorded, this one and a pair in the Museum for Communications. € 300

Sumatra. Palembang. 522o-56, 5 Gld Van Konijnenburg with orange IPL signet ring overprint, unused. € 325

Sumatra. Palembang. 522z-56, 5 Gld Van Konijnenburg with black IPL signet ring overprint, mint. Unlisted

Sumatra. Palembang. 547z-44, 15c Van Konijnenburg in pair showing the full straight-line overprint TANDJONGRADJA, used to validate stamps, unused. Much rarer than the cat value suggests. € 300++

Sumatra. Palembang. 547z-64, 10c Moehammadijah in pair showing the full straight-line overprint TANDJONGRADJA, used to validate stamps, on M.O. fragment cancelled Kajoeagoeng 20.6.2.12. Very rare and only two pairs recorded. € 600++