Old coin from an African country (6)
I believe the answer is:
guinea
I believe this is a double definition.
'old coin' is the first definition.
(historical type of coin)
'an african country' is the second definition.
(country in Africa)
'from' is the link.
(Other definitions for guinea that I've seen before include "one pound and five pence" , "Gold coin - West African republic" , "Former gold coin" , "country - or new?" , "Obsolete gold coin" .)