The Kommandant Dies at Dawn - S5-E6
Continuity mistake: As Schultz is eating from the tray he predominantly uses his left hand in each change of shot. When he takes the last piece, he has the toothpick in his left hand, when the shot changes he now has it in his right hand. (00:09:50)
Answer: It's a comedy, not a documentary.
stiiggy
Perhaps it was counterfeit. There are numerous episodes where they deal in counterfeit monies.