Chest for valuables (6)
(Other definitions for casket that I've seen before include "Box for jewellery, or corpse" , "Box for jewellery or ashes" , "Ornamental box" , "Small box for valuables" , "Small box or chest" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">chest for valuables</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for coffer that I've seen before include "Money chest sounds like one with lung trouble" , "jewellery store?" , "Treasury - chest for valuables" , "safe" , "Chest for storing valuables" .)