In "Summerween," Stan leaves a $50 Stan Bucks note behind after fleeing the Summerween Superstore with the Summerween merchandise.
Among the evidence gathered by the government agents in order to arrest Stan is a Stan Buck, as seen in "Not What He Seems."
An early version of a Stan Bucks note appears to the left of the mirror in "A Tale of Two Stans," when Stan is wearing a white shirt and a question-mark tie.
They're made of somewhat wrinkled index cards, with a crude estimation of a normal dollar bill's overall design drawn on them. A border with the number fifty written in each corner and "Grunkle Stan" written in the bottom center surrounds a crudely drawn picture of Stan himself with a speech balloon coming from it declaring: "It's Money!" Above this caricature are three dollar signs; to the left of them is the word "STAN," while to the right of them is the word "BUCKS."
- 112. "Summerween"