Ability to get an old coin (6)
I believe the answer is:
talent
This clue is a double definition.
'ability' is the first definition.
(a talent is an ability)
'an old coin' is the second definition.
(ancient unit of currency)
'to get' is the link.
(Other definitions for talent that I've seen before include "Old coin for natural ability" , "Natural ability or flair" , "Natural aptitude or skill" , "Clever folk" , "Innate skill" .)