Brunei, 50 Ringgits, issued in 2017. Issued to commemorate the 50th anniversary of the accession to the throne by Sultan Hassanal Bolkiah Mu’izzaddin Waddaulah. The design features three generations of royal family. Front: His Majesty Sultan Hassanal Bolkiah at left. In the center the late Sultan crowning his 21 years old son in 1967. Transparent window at left features His Majesty Sultan Hassanal Bolkiah. Back: the current Sultan and his eldest son, crown prince Haji Al-Muhtadee Billah greeting their subjects. The note is predominately printed in stunning yellow colour, which is also the royal colour of Brunei.