Around 7 minutes in, as Cahill (newly released from prison) returns to his housing estate carrying a holdall with his belongings, he drops it to the ground when his daughter runs up to greet him, then instantly it has vanished.
Set in 1984, the background of the anti-drug march features a car with a license plate beginning with "96," indicating 1996.
The movie shows the raid on the jewelry manufacturers Thomas O'Connor and Sons in Harold's Cross, Dublin, which took place July 27th, 1983. The raiders use a Volkswagen T4 Transporter in the movie that wasn't in production in 1983 - this model was introduced onto the market in 1991.
After the robbery of the Thomas O'Connor and Sons jewelry manufacturing plant, which occurred in 1983, the van that pulled into the garage with the stolen goods had a license plate with the number 93 D 25920. Under the Irish vehicle licensing system, the 93 at the beginning of the license plate number identifies the model year of the vehicle. There would not have been such a plate number in 1983.