Digs sunglasses Henry traded in for Penny (6)
I believe the answer is:
spades
'digs' is the definition.
(spading is a kind of digging)
'in for penny' is the wordplay.
'in' is an insertion indicator.
'for' becomes 'spaes' (I am not sure about this - if you are sure you should believe this answer much more).
'penny' becomes 'd'.
'spaes' going around 'd' is 'SPADES'.
'sunglasses henry traded' is the link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for spades that I've seen before include "Digging implements" , "Card suits and shovels" , "They may turn up" , "Suit in pack of cards" , "Implements for a suit" .)