Deliberate mistake: At the end, the U.S. Cavalry "brand" Blue finds on the mule isn't a brand at all: it's obviously been applied with white paint to make it more visible to the camera. It's also unlikely that it would be so large, or that it would be located on the animal's neck instead of on its rump. (00:46:50)
Factual error: Victoria's musical jewelry box has magical abilities. It can play its waltz tune ad infinitum without ever running down. In fact, we never see anyone wind it up: it simply plays the waltz endlessly every time the lid is opened. (00:17:00 - 00:25:30)
Continuity mistake: When Chio is trying to force information from Tina, part of her torn dress covers her left shoulder in the master shot, but in every close-up, her shoulders are bare. (00:29:45)
Audio problem: John and Manolito are driving the wagon and loudly singing "La Gallina" together. But as they pass closer to the camera, we can see that their lips aren't moving.
Revealing mistake: At the end, we see insert close-ups of several of the pueblo's residents. But they're exactly the same shots we saw near the beginning of the episode: the same people in the exact same positions, shown in the same sequence. The footage is recycled.
Revealing mistake: During the fiesta, Reno plays his guitar in the canteen. Each time the musical chords change, we should see his left hand shift positions on the neck of the guitar. But though his right hand is vigorously strumming the strings through several chord changes, his left hand never moves.
Continuity mistake: While he stands outside the saloon holding his beer, Manolito's glass refills itself between shots. (00:04:30)
Our Lady of Guadalupe - S2-E13
Continuity mistake: Just before the bad guys open fire, Mano is riding a full length ahead of Buck. In the very next shot, they're side by side. (00:31:50)
Continuity mistake: In the opening scenes, the perspiration stains on Blue's shirt disappear between takes. They return a few moments later, only to vanish and reappear several more times in subsequent shots. (00:05:00)
Once on a Day in Spring - S2-E20
Continuity mistake: Blue's knife slips and badly cuts his hand. But the next day, there's no sign of the wound or any bandage on his hand. (00:21:00)
Once on a Day in Spring - S2-E20
Continuity mistake: During Victoria's conversation with Vaquero in the tent, the red blanket wrapped around her changes positions (up near her ears, then falling off her shoulders, etc.) several times between takes.
Continuity mistake: Two of the ten orphaned Apache children are found hiding near the house, bringing the total so far to six. But later, after Chodi sends out a signal, two more children come in from the desert, and these are again counted as five and six. But the fifth and sixth of the children were already there - so the new total should have been eight, not six.
The Stallion - S2-E1
Continuity mistake: Blue leaves his regular horse exhausted at the ranch and takes another one in order to pursue the young Apache. But in mid-chase, Blue is suddenly back on his regular horse again.
Continuity mistake: Victoria is wearing a torn white blouse after the stage coach overturns, then, after she and Jim are walking through the desert, and they find water, she is wearing a pristine pink blouse. Then, a later shot shows the white blouse again, and while she and Jim are camping for the night, she is shown changing into the pink blouse.
