Images:

gw2-vigil's-honor-warhorngw2-vigil's-honor-warhorn-2gw2-vigil's-honor-warhorn-3

Set:

Slot Item Name Trading Post Preview Code
Warhorn http://db.dulfy.net/item/63482 [&AgH69wAA]

Where to Obtain:

Sold by Vigil Order in Gendarran Fields for 3 gold 60s. Must be member of Vigil Order to purchase