Brunei Currency and Monetary Board - 50 Ringgit banknote of 1981.

Sultan Brunei 50 Ringgit banknote collection
Brunei Currency - 50 Ringgit banknote
Brunei Sultan Omar Ali Saifuddien Mosque 50 Ringgit banknote
 Brunei 50 Ringgit bank note 
Brunei Currency - 50 Ringgit banknote of 1981, Brunei Currency and Monetary Board.

Obverse: Portrait of His Majesty Sultan Haji Hassanal Bolkiah Mu’izzaddin Waddaulah Sultan and Yang Di-Pertuan Negara Brunei Darussalam in military uniform.
Reverse: Sultan Omar Ali Saifuddien Mosque.