As new (6)
'as new' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for unused that I've seen before include "Remaining: inexperienced" , "Mint, as new" , "hadn't been exploited" , "Extra" , "Surplus" .)
(Other definitions for mint that I've seen before include "but not used" , "Coinage producer" , "Make coin - herb" , "Produce coins" , "Fragrant herb" .)