The way it usually works is that the drops are seperate from your inventory so if someone gifts you an item or you buy it from the store you can still drop it from the treasure.
So yes you can drop it again.
კომენტარის დასაწერად გაიარეთ ავტორიზაცია.
The question is when buying a treasure, for example the "Treasure of Immortal Aspect III 2016", but I already have the Hydrakan Latch (bought in the steam market)
Can go out again or do I get only the other items?
Sorry for my english