Revealing mistake: The square base securing the knife sticking out of the abdomen of the army lieutenant is visible as he and Blue scuffle in the river.
An Anger Greater Than Mine - S4-E1
Factual error: Diego's straight razor has a bright blue plastic handle. (00:08:00)
Revealing mistake: At the end, El Tigre (Ricardo Montalban) is supposedly dead, draped over the horse as his brother leads them away. However, his right foot is in the stirrup, and it is obviously holding his weight...not dangling as the rest of the "corpse"
Continuity mistake: Victoria starts the ill-fated journey wearing culotte-style pants. When they get stranded without food, clothes or other provisions, the pants somehow turn into a skirt.