Gilt edges on grail and lead pot, decorated
I believe the answer is:
gold plate
'grail and lead pot decorated' is the definition.
I can't tell whether this definition defines the answer.
'gilt edges' is the wordplay.
'gilt' becomes 'gold' ('gold' can be a synonym of 'gilt').
'edges' becomes 'plate' (I can't justify this - if you can you should believe this answer much more).
'gold'+'plate'='GOLD-PLATE'
'on' is the link.
Can you help me to learn more?
(Other definitions for gold plate that I've seen before include "Tall podge (anag.)" , "Rich metal dishes, etc" , "Gild" , "precious ware" .)