Former Parisian coin (5)
I believe the answer is:
franc
'former parisian coin' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for franc that I've seen before include "for laying out in Luxembourg" , "Nonsense (colloq.)" , "Old French coin" , "One hundred centimes in Benin" , "Ex-Gallic coin" .)