When the two police inspectors are searching and reading police files for potential suspects, it is said that ''one of the suspects has a girlfriend etc...''. There were never such police files to provide that kind of information in the Yugoslav Police.
Few policemen (both in uniforms and in civil clothes) seen in the scenes on streets and at the police station wore either too short (one even completely bald), or too long haircut. Such haircuts would have been considered extreme and in most cases forbidden by the, so called, Service Regulations at the time.
In the scene when three inspectors leave the police station for their first Phantom chase and when inspector Fangio enters police garage and starts his Ford Taunus, red flag of the Yugoslav Communist Party is placed in front of the station entrance. Actually this flag was never placed at any Yugoslav police, or army building. Only Yugoslav (federal) flag and the flag of the Socialist Republic (here Serbia) were placed.
All police cars in the movie have license plates with format M-110-xxx which were issued only for police vehicles in the Socialist Republic of Bosnia and Herzegovina (and not for Belgrade,or SR Serbia). Proper format for Belgrade police cars was M-610-xxx.
When imprisoned, The Phantom is shown in several sequences walking alongside the prison guard in regular gray-blue police uniform. Prison Guards of the Yugoslav Police never wore regular police uniforms, but distinctive dark blue ones.
Although Zastava 1300/1500 (''tristac'') was originally police car during 1970s, model used in the movie is repainted civil car. Cyrillic inscription ''MILICIJA'' (Serbian word for ''Militia'', former communist name for police force) has incorrect position, shape and size of letters.
All license plates on police cars are not the original ones. Filmmakers made few cardboard replicas, that were glued up on original modern plates, visible in few scenes. Theese replicas, however, differ slightly from the original ones in color type, size and numbers pattern.
In scenes when the crowd gathers on the Slavija Square to see The Phantom, few spectators sit in modern-designed plastic chairs, which were highly uncommon at the time.
In the scene where The Phantom steals the Porsche, inscription ''Carrera'' on the back of the car is clearly visible. The Phantom drove Porsche ''Targa'' 911 S.
All traffic signs that appeared in the movie are mounted on modern gray-colored poles. However, Belgrade traffic sign poles in 1970s and 1980s were actually painted in blue and white stripes, according to traffic regulations at the time.
Although filmmakers tried to hide as many as possible modern-day vehicles, street advertisements and other unwanted objects (using dark fabric covers), there are still many of them seen mostly in car chasing scenes.
When Phantom in his Porsche passes along parked police Zastava 1300 (''tristac'') modern light sign of Serbian Bank Exchange Office, introduced in 2000s, is clearly visible.
Zastavas 101 (''stojadin'') were originally police cars during 1970s, 1980s and 1990s, but all four models seen in the movie (three standard police and one civilian, used by the Chief Inspector), are versions from mid 1980s (movie depicts events from 1979.). Like Zastava 1300/1500, models were repainted, again with wrong position and size of the inscription ''MILICIJA''.
There were no tram rails on The Bridge of Branko (Brankov most) until 1984, so it was impossible to see a tram-car on the bridge back in 1979, as it was seen in one of the chase scenes.