Images:

gw2-whisper's-secret-macegw2-whisper's-secret-mace-2gw2-whisper's-secret-mace-4gw2-whisper's-secret-mace-3

Set:

Slot Item Name Trading Post Preview Code
Mace http://db.dulfy.net/item/63530 [&AgGfeQAA]

Where to Obtain:

Purchased from Order of Whisper weapons vendor in Bloodtide Coast for 3 gold 60 silver.