The Usmani is the highest denomination in Copper coins of Tipu Sultan, it is named after Hz. Usman - the third Caliph however later Tipu later changed the name to Mustari meaning Jupiter to align with the names of his other copper coins which were all named after planets.
A bit of info on the three Delhi Durbars held during the period of the British Raj and information on the upcoming art exhibition by DAG on the subject of these Delhi Durbars. Here is the link to the
The tale of Two Identical Coins - one Silver and the other Gold. Salient features of Mohammed Bin Tughlaq's Coinage.
