The most important example from among the sultans' armours referred to in sources that have reached today is the armour belonging to sultan Mustafa III. Sultan Mustafa, the 26th Ottoman Sultan, was enthroned in
1757 and ruled until 1774.
His armour produced from steel mu st have been a product of this period. The gold medallions on the steel armour are decorated with diamonds, rubies and pearls. On the helmet is a plume decorated with diamonds and rubies
instead of a feather. The sword worn on the armour is similarly decorated with jewels. The sultan is not known to have led campaigns. The armour was probably prepared to be used in ceremonies. Making a great contribution to the construction oflstanbul, the sultan built three mosques in the city.