Visible crew/equipment: When Sangre attacks the soldier and the man's rifle falls during the fight, the shot cuts to a close-up of the gun - and we can see several white blocking marks chalked on the floor beside it. (00:33:50)
Our Lady of Guadalupe - S2-E13
Continuity mistake: When Father Sanchez contemplates tossing his burden over the cliff, the bundle he holds is neatly wrapped. When the shot cuts, however, the blanket wrapped around the statue is abruptly loose and disarrayed. (00:17:30)
Revealing mistake: Apparently, Buck getting thrown off his horse, whose name was Rebel, wasn't in the script. When it happens, a startled Cameron Mitchell shouts at the horse using its real name, Prince. Despite the blooper, the shot wasn't cut. In fact, it happens at least two more times in other episodes of the series. (00:08:00)
Continuity mistake: At the end, despite an earlier emphasis on the necessity of wearing one's hat in the desert, John rides out of town without his. Victoria, who wore John's hat when they crossed the desert, isn't wearing it either. And of course, the "lost" hat reappears on John's head in the next episode. (00:39:20)
Continuity mistake: Inside the hotel, Manolito is wearing a white shirt. But when he walks outside, he has on his usual yellow-gold one. It turns white again a few shots later.
Continuity mistake: When he's escorting Victoria back to the ranch, Manolito's shirt collar is completely outside his jacket in all the full shots, but is tucked inside the jacket in close-ups. (00:24:00)
Revealing mistake: Henry Darrow's stunt double is very noticeable during the final fight scene with Ramon. He's heavier, taller - and is wearing a very bad wig. (00:44:30)
Continuity mistake: The plate Buck and Mano wash is a 20th Century pie tin made of non-reflective aluminum, something unlikely to be found in 1870s Arizona. After they dry it off, it changes into polished steel that's shiny enough to reflect their faces. It also changes shape.
Plot hole: Manolito suffers a peculiar memory lapse in this episode. He's fluent in Apache, yet at first speaks to the children only in Spanish and urges Vaquero to translate. Later, though, he "recovers" well enough to speak to both Geronimo and the children in Apache.
Continuity mistake: Manolito leaves the ranch on a black horse that changes, mid-ride, into his regular brown sorrel, "Macadoo." In later shots of the same ride, the black horse is back, but when Mano dismounts, he's with Macadoo once again.
Only the Bad Come to Sonora - S4-E3
Continuity mistake: The number of outlaws in the gang mysteriously increases during one chase scene. For most of the episode, there are only three of them. When they gallop off after Manolito, there are suddenly five. Next scene, there are three again. (00:20:35)
Generation - S3-E25
Revealing mistake: Due to budget cuts in the 3rd season, an L.A. soundstage replica of the ranch house replaced the outdoor set, which was in Old Tuscon. The replacement was often painfully obvious. In this episode, a stock exterior shot of the real house, with its outside walls undecorated, contrasts with the mock-up, which has mounted cattle horns all over it.
Continuity mistake: Mano throws a lasso around part of the burning hay wagon and hauls it away from the building. The camera angle changes as the wagon is pulled out, and from one shot to the next, the flames completely disappear.
Continuity mistake: Mano's horse is shot and killed by the Apaches. But when we see a shot of the "dead" animal, it's not Mano's, but the horse Buck was riding (with a distinctive white blaze on its forehead). Apparently, Buck's horse was better at playing dead.
The Kinsman - S1-E20
Continuity mistake: When Manolito rides up to the house, Buck is grooming his horse, Rebel, while standing beside the animal's left flank. After a very brief cut to Mano and back, Buck is suddenly on Rebel's right flank, without enough time to have moved there. (00:34:30)
Continuity mistake: The blood stain on Sangre's clothing disappears when Manolito borrows the outfit as a disguise. It reappears at the end just in time for Sangre to put the clothes back on again. (00:39:20)
Continuity mistake: A dark brown moisture stain that forms a stripe down the back of Sam's coat disappears when he enters the church, reappears when he comes out, and vanishes again when he meets Trinidad in the graveyard.
Plot hole: The scriptwriter here apparently never saw earlier episodes in which it was well-established that Manolito spoke fluent Apache. In a scene where he attempts to sneak past two braves while disguised as an Apache, he suddenly can't speak the language when they challenge him.
Revealing mistake: When the rurales chase Manolito, he's riding Macadoo, his sorrel horse with the blond mane and tail. But the use of a stunt horse becomes obvious when Mano hides by leaping off into an arroyo and urging his mount to lie down beside him. Suddenly "Macadoo's" coat is a much darker brown and his mane and tail have also turned brown. He becomes a blond sorrel again, though, in the next scene.
Continuity mistake: Blue is struck by a rifle stock and has a bleeding wound on his left temple. A few shots later, though, the wound disappears completely. Several scenes later, it's back again.