Crossword Genius

At university, in charge about money (5)


I believe the answer is:


I'm a little stuck... Click here to teach me more about this clue!

'money' is the definition.
(I know that ducat is a currency)

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for ducat that I've seen before include "Historical coin" , "tender once" , "Antique coin" , "piece of gold" , "Money no longer" .)

I've seen this clue in the Sydney Morning Herald.
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