Antique shop item (5)
I believe the answer is:
curio
'antique shop item' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for curio that I've seen before include "Unusual, intriguing object" , "Bygone" , "'Rare, unusual object (5)'" , "Rare or unusual thing" , "Antique" .)