When Raft is shot in front of the cigar store, one can observe the low-speed projectiles used to break the glass windows of the store behind him.
The film opens with a title card that reads "New York in the late 1920's", then proceeds to show scenes of the city with 1950's-era cars driving about and buildings that had not been built yet in the montage.
Just over 25 minutes into the picture, in a scene that was to have taken place in the late 1920s or early 1930s, George Raft (Ray Danton) takes a pack of cigarettes from the cigarette girl's tray. The label shows that they (and later, all packs in the tray) are Lucky Strikes. But the packs are the WW2-and-later design, featuring a white background. Before the early days of WW2, Lucky Strike packs had a dark green background, which would look dark on black and white film.