Will the Real Colonel Klink Please Stand Up Against the Wall? - S4-E13
Continuity mistake: In Klink's quarters, Schultz stops Hogan from disturbing Klink. When he does, Schultz's arm is across his chest. When the angle changes, his arm is at his side.
Answer: It's a comedy, not a documentary.
stiiggy
Perhaps it was counterfeit. There are numerous episodes where they deal in counterfeit monies.