Drawing of king hidden in ramshackle chest (6)
I believe the answer is:
sketch
'drawing' is the definition.
(I know that sketch is a type of drawing)
'king hidden in ramshackle chest' is the wordplay.
'king' becomes 'K' (abbreviation for king in chess).
'hidden in' is an insertion indicator.
'ramshackle' is an anagram indicator (I've seen this in other clues).
'chest' is an anagram of 'setch'.
'k' going within 'setch' is 'SKETCH'.
'of' acts as a link.
(Other definitions for sketch that I've seen before include "Short comic routine" , "bit of a performance" , "draft" , "Make rough drawing" , "Short dramatic scene" .)