Doctor Thorne's a crafted period piece (8)
I believe the answer is:
sheraton
'crafted period piece' is the definition.
(Thomas Sheraton was a furniture designer)
'doctor thorne's a' is the wordplay.
'doctor' indicates an anagram.
'thornes'+'a'='thornesa'
'thornesa' anagrammed gives 'SHERATON'.
(Other definitions for sheraton that I've seen before include "Another's (anag) - style of furniture" , "Thomas -, English furniture-maker" , "Strange North Sea style of furniture" , "Classic furniture style found in North Sea" , "type of furniture" .)