When Nina gives Alexey the parcel from Henk, it is clearly not sealed.
In the next scene, Alexey cuts the sealing tape with a knife before opening it.
When Henk check out Soviet hotel in his first morning, same black small car with white side writings passes twice in front of hotel.
In the closing credits for the song "Benevolence" the Russian composer Ivan Larionov is mentioned, referring to the samples from the Russian song "Korobejniki", which became the "Tetris Theme". However while Larionov did many Russian songs which are considered to be folk songs, including "Kalinka", Korobejniki was not written by him. The actual composer is unknown.
In the shots where Henk's passport details are shown, the capital of the Netherlands is erroneously spelled as Amsterdamn, instead of Amsterdam. Additionally, instead of the gender, they entered "12 JAN".
The taxi that took Henk Rogers back to his hotel after meeting Alexej is a Mercedes. In the 80s ordinary Soviet taxis were mostly "Volga", sometimes "Moskvich".
Near the end when Valentin is on the plane headed to Tokyo looking out at the other plane with Henk on it, the plane is incorrect. The plane in the movie shows a trijet configuration, with one engine mounted center on the fuselage. However, the plane with tail number CCCP-86514 was a Ilyushin IL-62M with quad engines mounted on the wings.
When the Russians check Hank, Lincoln and Arakawa's passports, the latter name is written as "Minora Arakawa" instead of "Minoru".
His signature is also different from the real life Minoru Arakawa.
His signature is also different from the real life Minoru Arakawa.
Henk makes a reference to fire-breathing piranha plants, which did not exist in the Mario series until "Super Mario Bros. 3." While North America did not see SMB 3 until 1990 and Europe until 1991, the game had been released for the Famicom (the Japanese version of the NES) in October 1988.
When Alexey hands Henk the note with his address, the street is written 'Rostovskaya pereulok.' This is a mistake that no Russian would make, as it uses an adjective with a feminine ending with a masculine noun. The correct address would be 'Rostovskii pereulok.'
When reading the fax number of ELORG in Moscow Henk mentions the dialing code of Moscow as "495", which is the current code. In the soviet times until Russia 2005 it was "095".
In a parade scene set in 1989 Mikhael Gorbachev's speech is about 70 years since the October Revolution. This anniversary happened in 1987.
Henk says ELORG, a Soviet company, phone/fax number is "+7 495 442 481". In this notation, "+7" is a country code, and "495" is Moscow's regional code. But phone numbers in Moscow in the 80s were seven digits, not six. Also, the Moscow region code became 495 only in 2005 and was 095 at the time portrayed in the movie.
Henk mentions Link and Zelda from Nintendo's Legend of Zelda series but the game shown is Link: Four Swords Adventure, a game made in the 2000s.
When the Russian goon from the Embassy says "Akemi Rogers?", his jaw (seen for behind) moves after the line is said.