Corrected entry: Near the end of the movie, in the shot where the marked patrol cars are racing towards the prison to arrest the warden, you hear them using electronic sirens. Those sirens were not in law enforcement use until the late sixties. (01:57:00)
Corrected entry: Andy leaves his prison shoes behind in a shoe box for the warden to look at as the escape siren begins to sound. He wears the warden's polished shoes while returning to his cell the night before. As Andy lowers himself onto the sewer pipe after coming through the wall, you can see he is wearing his "high-top" leather prison shoes and is not barefooted or wearing the warden's shoes before he breaks into the sewer pipe.
Corrected entry: Andy gets a poster of Rita Hayworth when he comes into his cell after his stay in the hospital, and when Red is explaining how Andy broke out, it shows him digging behind her. However, when it is found that Andy escaped, the warden throws a rock through a picture of a cavewoman (Raquel Welch) and it goes into the hole Andy dug. This poster is not the same as the Rita Hayworth one, and it appears to be on the opposite side of the cell as before.
Corrected entry: When the police read Byron Hadley his Miranda rights, they are reading a very specific edited version. This version did not surface until 1968, Hadley was arrested in 1966, the year the Miranda case was taken to court. It is implausible that any such Miranda reading would have been widely circulated at the time of the arrest.
Corrected entry: Andy Dufresne was the vice-president of a large Portland bank before his high profile murder conviction. After escape, he visited nearly a dozen banks in the Portland area. Banking is a close-knit industry know for honest people working long careers. It is unbelievable that even after 20 years, Andy could avoid being recognized as Andy in local Portland area banks. He removed an average of almost 30 thousand per bank (in 1966 dollars)- a fortune. To receive cashiers checks in that amount, he would have to deal with senior bank officials. Even though the Portland area is a fairly loose term, the banks must have been close, as he visited them before word of the escape became public knowledge. In the 1960's, Portland had a population of about 75 thousand, indicating that Warden Norton had money in almost every available bank in the area. It is inconceivable that Andy could have avoided detection of his true identity under these circumstances, even with false identification. He would have been recognized by an employee in one of the dozen banks.
Corrected entry: When Andy finally leaves Shawshank and leaves through the tunnel emerging after crawling through near half a mile of horrible slimy stuff he does not have the case with him containing the exchanged documents he switched when the warden opened the safe and when he switched bibles in the office. But we see him later after the escape in a town handing over documents which confirm his new identity.missblue8
Corrected entry: The "Archie and Friends" comic the guard is reading on the toilet when Andy starts playing opera over the intercom is an issue from 1993, nearly 50 years after the movie takes place. Archie Comics are thanked in the end credits for providing the comic, and the copyright also verifies that it is from 1993.
Corrected entry: Spoiler: After Andy escapes the prison and the aftermath of the escape is shown, William Sadler seems to tell his inmates the story of how Andy bought the guards' trust on the roof. He's telling it as if it is told to someone who wasn't there - yet he's telling it to his friends, who were at the scene. It doesn't sound like he's reminding them of the event, but like he's telling the story to someone who wasn't there, like a story. This makes no sense at all, since his friends would know for sure what has happened, and only need to be reminded.
Corrected entry: When they are doing income tax returns, Red makes reference to the April 15 deadline, which back then was March 15th.
Corrected entry: In the scene where Warden Norton is talking to Tommy, he offers a cigarette to Tommy but is not smoking one himself. At the end of the conversation, he drops a partially-smoked cigarette and crushes it out, then walks away. It isn't Tommy's cigarette, because when Tommy is lying on the ground, you can see his cigarette beside his right hand.
Corrected entry: When Andy escapes from Shawshank, and we see the shot when he first comes out of the sewer pipe, watch his bag that he tied to his ankle. It appears to float. Considering that Andy packed up his Stone Chess set in this bag, it's very unlikely that the bag would float even in the slightest.