In the scene with two policemen in the house, one of them wears beard, forbidden by rules of Military Police.
When he plans to construct a house, the neighbor says that the owner of the land is "colonel of the Navy". There are no colonels in the Brazilian Navy. The equivalent is "military commander" (or just "capitain").
When Tim Maia escapes from the little hotel in SP through the window, the white VW Beetle frontal tag (out of focus) in the reality is a back tag (the little green tag in the horizontal shows it).
When Tim Maia (Robson Nunes) returns from the USA, in 1964, the car (a Morris Oxford) parked on his street has a tag "RJ - Rio de Janeiro". From 1960 to 1975, the city of Rio was Guanabara State (and the tag was just "Guanabara"). Even though it was the former State of Rio, the tag would be "Rio de Janeiro - RJ" (first the name; the acronym as second) and not "RJ - Rio de Janeiro", as nowadays (as seen in the scene)
In the final credits, Denise Dumont's character was credited as Mrs. CardosA (with an A) and not CardosO (common Portuguese surname), as in the story.
In the kitchen of Roberto Carlos' apartment, switches and sockets are "Pial type", usual from the 70's on (and not from the 60's).
In the last scene in "Universo em Desencanto" (set in the 70s), the Volvo stopped outside has the tag of the 60s (just numbers).
When Tim Maia sells plumb tube in the junkyard, a new air conditioner (split type) appears on a window on the building behind.