Sign of ownership is apt when crafted with enamel (9)
I believe the answer is:
nameplate
'sign of ownership' is the definition.
(I've seen this before)
'apt when crafted with enamel' is the wordplay.
'when crafted with' indicates an anagram.
'apt' with its letters mixed up with 'enamel' can make 'NAMEPLATE'.
'is' is the link.
(Other definitions for nameplate that I've seen before include "sign of ownership" , "Notice telling who is the occupant" , "Occupant's identification" , "for handle at entrance" , "It may be attached to an office door" .)