The Nagal staff was a sceptre carried by the Grand Nagus of the Ferengi Alliance as a symbol of his authority and power. The figurehead was that of a Ferengi man.
History and specifics[]
It was traditional to kiss the staff when in the presence of the Nagus. (DS9 episodes: "The Nagus", "The Search, Part I", DS9 novel: The 34th Rule)
Grand Nagus Zek had to use the staff as a cane due to his advanced years. When Zek retired in 2375 and named Rom as his successor, Zek also passed the staff to Rom. (DS9 episodes: "The Nagus", "The Dogs of War")
When Jean-Luc Picard saw Rom with the Grand Nagus' staff, Picard thought it a wonderful prop to impart stature and majesty. (TNG novel: Gemworld)