Art seldom ruined by him? (3,6)
I believe the answer is:
old master
'him?' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'art seldom ruined' is the wordplay.
'ruined' is an anagram indicator.
'art'+'seldom'='artseldom'
'artseldom' anagrammed gives 'OLD MASTER'.
'by' acts as a link.
Can you help me to learn more?
(Other definitions for old master that I've seen before include "special picture" , "Liege lord" , "soon to leave school?" , "Famous painting" , "Mr Chips, say?" .)