During location shots at the Cadillac crash scene the same dark blue Thunderbird passes in the background after several seconds elapse.
Two of the "tin men" are waiting at a traffic light in a '59 Cadillac Eldorado convertible. However, when we switch to a view of the two guys through the windshield, the vehicle becomes a hardtop. Switching back to a longer shot, the car is again a ragtop.
Earlier in the file Sam's Cadillac is a convertible when Tilly comes out after doing a scam and throws his briefcase in the back while Sam is outside of it and you can hear the the Base Ball game in the background. But latter on when he and Tilly are riding around in it it's a Hardtop.
When the salesmen are receiving their commissions in 1963, the lounge band is playing "The Girl From Ipanema" to which patrons are singing along. The actual album by Stan Getz that brought the famous song to the USA was not released until March 1964.
The bottles of Budweiser and Miller beer are the more modern (1987) style and not the correct bottles of the time.
In this Baltimore-based story, during a scene in the bar, there is a Busch promotional light on the wall. The movie is set in the 1960s, but Busch beer was not licensed for sale in Maryland until the late 1970s.
During the Cadillac crash scene a 1964-65 Thunderbird passes on the street in the background. The film takes place in 1963.
In the pool hall scene "Wishin' and Hopin'" is playing but that song by Dusty Springfield wasn't released until 1964.
When Tilley discusses his accident with his friends at the café, we hear him say "of all the people who could be running into me it has to be another tin man." However, his lips suggest the word "another" was a replacement for an expletive.
When BB meets Nora, he tells her that he is a widower. After they begin living together he says that he has never had a serious relationship before. Nora does not question this, and the disparity is never explained.