The Illusion of the Lethal Playthings - S1-E20
Character mistake: A toy company would surely know better: the sign outside the toy factory misspells "Pinocchio" with only one C instead of two. (00:25:20)
The Magician (1973)
1 character mistake - chronological order
Starring: Bill Bixby, Keene Curtis, Joseph Sirola, Julian Christopher
Deliberate mistake: The main character is called Anthony Dorian in the pilot. But without explanation, his name becomes Anthony Blake in the first regular episode. (00:05:15)