I found this information written in a board in the palace with the title: Mir Mahbub Ali Khan, Asaf Jah VI:
The youngest Asaf Jah ruler, Mir Mahbub Ali Khan, was 2 years and 7 months old when he was installed on the masnad by his co-regents Mir Turab Ali Khan and Salar Jung I and Nawab Rasheeduddin Khan, Shams ul Umara III.
In 1885, when he was 17 years old, he assumed sovereign rights. The direct representative of her majesty, the Viceory Lord Ripon, attended the coronation and said, “The people’s loyalty to your house and to yourself is manifest and unquestioned…In their well being you will find your truest happiness and in their contentment your best security”.
Soon after his coronation, Mahbub Ali Khan, issued a farman to his 10 million subjects, “nothing will afford me greater pleasure than to see my people living in peace and prosperity, engaged in the development of resources, of wealth and in the acquisition of knowledge and cultivation of the arts and sciences.”
As a founder of formal education in the State, he propounded good primary schools and education for women. Medical training and research reached a high standard of excellence an chloroform anesthesia was used in Afzalgunj hospital for the first time in the world.
Hyderabad prospered greatly during his reign. Railways were developed. New irrigation works, cotton mills, silk factories, oil and flour mills were established at Hyderabad, Gulbarga and Aurangabad.
Carved wooden furniture: The intricately crafted wooden furniture on display has augmented the grandeur of the Chowmahalla palace, since the last 200 years. Amongst these, is an exquisite gold painted basin with lamb’s head carved on four sides used by Nizam VI of Hyderabad.