Unfortunately snipped too closely at the top, this 1909 1c has a foreign arrival postmark with the date 25.10.42 8-9N which is consistent with a German postdate format. I would like to know what the 8-9N stands for.
1942 was right in the midst of jap occupation! That is very interesting indeed. I could make out the letters UX and then AVEN which would correspond to Cuxhaven, a coastal town in Lower Saxony, Germany.
Cuxhaven was a famous site for German rocketry. The first cruise type missiles were developed there. During the second world war, there were rocket research facilities in Cuxhaven. The facilities, including the rocket technology, were later captured by the British army.
Can just about make out a smudged London W.P.O. postmark. There are another 2 postmarks here.
A Singapore postmark and probably an arrival franking. Obviously a busy post office with the time of day on the postmark.
A very nice Singapore paquebot, the first that I have seen on this series of stamps. There seems to be very few postwar paquebot stamps around in my experience. Was it because airmail became more common by this time with the building of air fields during the japanese occupation with enforced labour?