Wow, here is a splendid level 50+ chest that drops blue/green items.
What is best of all, you dont have to kill anything to loot it. Thats right, its open to the world. Even in overflow zones, so you can really farm this and get easy gold/items.
Here is a pic of it:
Location Harathi highland (35-45 lvl)
Its supposed to be part of the Group event: Defeat Ulgoth the Modniir, but you dont have to kill him to loot it!!!
So to summarize: Usually you have to kill a boss to get a chest like this. But this one spawns before/after the event and you loot it.
Be sure to load up the game and grab it from the overflow, too.. easy farming.. Usually there are several overflow zones going on, so you can log out over and over and usually grab this one pretty fast.
Hurry up, this wont last long. GW2 exploits like this are fixed ASAP!!!