Sultan Yahya Petra of Kelantan is installed as the sixth Yang di-Pertuan Agong.

Wikipedia: Yahya Petra of Kelantan

… of Malaysia through a philatelist’s eyes

Malaysia has a very interesting way of choosing its Head of State. This unique method provides a fascinating opportunity for philatelists, be they novices wanting to build an interesting but self-contained collection; thematic collectors of ‘Monarchy’ from around the Commonwealth or the World; or Malaysia experts. This article explains that unique system and the philatelic opportunities it offers to all these groups of collectors.
Malaya Study Group Special, Dominic Morris CBE

The Yang diPertuan Agong is the head of state of Malaysia