Note of Sale is a plot item in Dragon Age: Origins.
Part of the original process to recruit Shale before the golem was cut from the base version of the game and later added through The Stone Prisoner DLC, it is unavailable via normal means.
See also Edit
The Stone Prisoner
Golem Control RodGolem Control Rod
Dwarven runes flicker along this crystalline rod. You've been told that it controls a golem in the village of Honnleath, near the Korcari Wilds.