Review for LEGO set 6038 Wolfpack Renegades from Brickipedia
“The "loot" consists of a barrel and a treasure chest that contain four "gold pieces" (that are simple yellow round 1x1 plates) and one yellow goblet. The chest is usually stored in the back of the cart, but can also be hidden in a secret compartment inside of it.”
Full review at brickipedia.fandom.com