New lv16 arcanes

[Litheus]

1. do chest drop from elites and normal maps or only normal?
2. do chest drop from bosses only or mobs only or both?
3. are the chest farmable with a lv49 character?
4. why are there no arcane weapon lv16 in the auction?
5. did anyone loot it till now?
6. how high are the chances of looting a lock
7. what is the name of the chest that drops the lv16 arcanes