Display poor quality stuff in antique shop as well (6)
I believe the answer is:
tattoo
'display' is the definition.
(I have seen 'Military display ' mean 'tattoo' so perhaps 'display' could also mean 'tattoo')
'poor quality stuff in antique shop as well' is the wordplay.
'poor quality' becomes 'bad'.
'stuff' indicates the central letters (I've seen 'stuffing' mean this).
'in' is an insertion indicator.
'antique shop' becomes 'tt' (I am not sure about this - if you are sure you should believe this answer much more).
'as well' becomes 'too' (both can mean 'also').
The middle letter of 'bad' is 'a'.
'a' put within 'tt' is 'tat'.
'tat'+'too'='TATTOO'
Can you help me to learn more?
(Other definitions for tattoo that I've seen before include "Military call and design on the skin" , "Design on skin - military show" , "display involving military band" , "one has to beat" , "Drum signal; skin mark" .)