Brunei Stamps from the past

I think I will put up some more of the stamps. I had 2 more sets in my PC. This time seem to be in colour rather than the old B&W ones.

These stamps are circulated during the era of Brunei's 27th Sultan, Almahrum Sultan Ahmad Tajuddin, the elder brother of Almahrum Sultan Omar Ali Saifuddin III (the 28th sultan and the late father of the current sultan). I did not have any other details on these stamps, more than that.

Somebody out there maybe able to provide some info.

The Next stamp is the 1949 Universal Postal Union for Brunei. I wasn't born when it was circulated and I had no other info for this set.

I will try to dig up some more from my old "kaban" for some old stamps and first day covers which I might had kept during my students (apprentice) days in the UK.