Continuity mistake: The date of Helen Kimble's murder is given here as Sept. 19, 1961. Previous episodes, however, had established it as occurring on Sept. 17, 1960.
Continuity mistake: In flashback, we see the one-armed man kill Helen Kimble by striking her with a heavy lamp. All through the earlier seasons, though, we were repeatedly told that Helen had been strangled. (00:28:50)
Revealing mistake: During the race through the desert in Annie's Jeep, the rear-screen projection couldn't be more obvious. In the supposedly speeding vehicle, Annie's hair is blowing slightly, but Kimble's never moves at all. (00:35:30)
Continuity mistake: Throughout the show's early episodes, Helen Kimble's dress on the night she was murdered was described as blue or blue-gray. Here, in the flashback to the murder, she's wearing an evening gown that isn't blue or gray, but pink. (00:27:45)
The Shattered Silence - S4-E27
Continuity mistake: Kimble is wounded in the left arm. But at the end, as he makes his way down the mountain, he's holding and favoring his right arm. (00:49:00)
The Breaking of the Habit - S4-E19
Continuity mistake: Kimble was gimpy early in the episode, because he had been shot in the leg. During the episode he refuses any treatment. But near the end of the episode he is seen walking without a limp and in perfect health.
Visible crew/equipment: The tailgate of Lloyd Chandler's station wagon, and the door of Gerard's car a few minutes later both capture reflections of studio lights and the camera crew. (00:04:50 - 00:07:10)
Visible crew/equipment: When Gerard opens the precinct office door, its glass shows us several studio reflectors. (00:04:20)
Dossier on a Diplomat - S4-E25
Continuity mistake: Kimble tells Hobart there's no new evidence that could get him another trial. But maybe Dr. Kimble is suffering from amnesia. In the past 3 1/2 seasons, he's uncovered no fewer than four potential witnesses who could provide new evidence in a second trial. (00:22:35)
Revealing mistake: Within hours of being shot in the leg and having the bullet dug out without anesthetic (unless a slug of whiskey counts), Kimble is not even limping. (00:15:00)
The Breaking of the Habit - S4-E19
Continuity mistake: Kimble enters Sister Veronica's room, closes the door and walks toward her. Then the shot cuts to a closer angle, and he's closing the door over again. (00:31:55)
Continuity mistake: Rafe and Kimble escape handcuffed together. They break the linking chain with a rock: each then wears a single bracelet. But when he kneels to examine the dead deputy, Kimble is wearing a cuff with an intact chain and an empty bracelet hanging from it. (00:28:45)
Right in the Middle of the Season - S4-E11
Revealing mistake: When Kimble exits the police station and closes the door, the set wall wobbles. (00:19:05)
A Clean and Quiet Town - S4-E3
Continuity mistake: The rear tires on Kimble's car get stuck in the sand and spin when he's trying to U-turn and avoid the roadblock. After the police order him to drive back to town with them, however, the car wheels somehow unstick themselves, and Kimble has no trouble at all driving out of the sand pit. (00:48:25)
The Other Side of the Coin - S4-E16
Continuity mistake: When Sheriff Corby arrests Kimble outside the boarding house, the front door is open and the porch light is on. In the next shot, as they get in the car and drive away, the house door has closed itself and the porch light is off. (00:27:55)
Second Sight - S4-E7
Plot hole: Kimble enters the bar in the midst of a fight between photographer Howie and a man he tried to blackmail. Kimble comes in too late to hear what the scuffle is about, yet after breaking it up, he somehow knows all about the incriminating photo that sparked it. (00:06:00)
Continuity mistake: Kimble's nephew Billy is mistakenly listed as "Bobby" in the end credits.
A Clean and Quiet Town - S4-E3
Continuity mistake: The one-armed man, whose name was earlier established to be Fred Johnson, is for some reason re-named Cramer in this episode's credits. (00:49:40)
Continuity mistake: The one-armed man orders Chandler to get up off the ground. In close-up, we see him sit up. But in the very next shot, he's flat on his back and sits up again. (00:11:50)
Revealing mistake: The last scenes of the grand finale/climax occur in an abandoned amusement park that's supposed to be in inland Indiana. But several shots with the Pacific Ocean "lurking" in the background (despite the cameraman's best efforts to hide or avoid it), as well as palm trees, and ocean sounds intruding on the soundtrack, reveal that the actual shooting location was in Southern California. (00:37:15)
Answer: Production vehicle models aren't in sync with the calendar year. The '65 Mustang began production in March 1964 and first sold in April 1964, before it was "introduced" the following year. I don't know which model was seen in the episode, but the 2+2 fastback was sold in September 1964. The 1964 film "Goldfinger" uses a 1965 Mustang as part of Ford's product placement. Basically, in the 1930's, FDR ordered automakers to release vehicles in the fall of the preceding calendar year "as a means of facilitating regularization of employment in the industry." Now, automakers can release new models as early as Jan 2 of the preceding year.
Bishop73