Characteristic image of returning setter (me) pocketing pound (6)
I believe the answer is:
emblem
'characteristic image' is the definition.
'returning setter me pocketing pound' is the wordplay.
'returning' shows that the letters should be reversed in order.
'setter' becomes 'me' (the setter of the clue).
'pocketing' means one lot of letters goes inside another.
'pound' becomes 'lb' ('lb' can be a synonym of 'pound'**).
'me'+'me'='meme'
'meme' enclosing 'lb' is 'melbme'.
'melbme' back-to-front is 'EMBLEM'.
'of' is the link.
(Other definitions for emblem that I've seen before include "Crest or symbol" , "Symbolic representation on badge etc" , "Visible symbol of an abstract idea" , "Crest or insignia" , "Badge or representative device" .)