(at around 43 mins) The taxis of the time had a logo in the shape of a circle with an identification number on the front door. In this scene the taxis don't have any logo except the taxi sign on the roof.
(at around 42 mins) The bus has no identification or signs of any kind despite the fact that all tour buses of the time carried signs with the name of the company.
(at around 42 mins) The bus doesn't have a license plate.
In the end of the film it is mentioned that this was the only civil court to convict a military junta. However, in 1975 Greece a civil court in Athens convicted the local military junta (1967-1974).
(at around 25 mins) When Julio César Strassera walks through the square, you can see two telephone booths from the Entel company. The logo, which symbolizes an "e" is rotated 90 degrees, without explanation. Possibly this is because the art director didn't investigate that time, to know the correct orientation of the logo and its meaning.