Deserter Gold is a Treasure Hunt quest found in northern White Orchard. This quest won’t start if you’ve done another Treasure Hunt quest called Temerian Valuables.
Name: Spy’s Notes
Following contains quest spoilers. You’ve been warned
Find the treasure
Before going toward the hidden chest be sure to pick up the Temerian lily key found from the dead body, near the wooden bridge that leads to the nearby Mill.
Quest eventually takes you to the basement of the shack in the Mill area.