Sunk Costs - S3-E3
Continuity mistake: Mike sets a trap to taint a cartel's truck with drug residue. First, he inserts a bag of cocaine in a shoe, then throws the pair of shoes over a telephone wire. His plan is to shoot the hanging shoe so the cocaine powder pours out onto the truck as it passes under the wire. However, when he inserts the drugs it is in the right shoe, but later, it is the left shoe he shoots and has the powder in it. (00:29:30 - 00:38:00)
Sunk Costs - S3-E3
Other mistake: While setting up the shot to drop drugs on the Salamanca truck, Mike puts the drugs in the left sneaker. He later shoots through the right sneaker. (00:29:29 - 00:38:06)
Sunk Costs - S3-E3
Factual error: When Gus meets Mike there is a 94-00 black suburban in the background with rims from an 08-11 suburban which didn't exist at the time the episode takes place.
Answer: It might be the Panavision cap he wore when directing his terrible commercials.