When Tony is visiting Brink's headquarters, he is shown in a medium length shot standing next to a chute. Bags of money start coming down the chute and land on a table at its base but one of the bags lands on the floor. Next it cuts to a long shot but now all the money bags are on the table.
The first time the whole group enters Brinks, Tony is showing them around and at one point, for a joke, he tells them that they have to get down and crawl, "like John Wayne in Sands of Iwo Jima". The Brinks robbery took place in January 1950, The Sands of Iwo Jima was not released until march 1950.
When they are looking for the candy company safe, they have a scene in the room with tumblers full of different color gum balls. The gum balls in each tumbler should all be the same color, because the color is added in these tumblers, a different color for each tumbler.