Corrected entry: I know that this is a kiddie's movie and this was done for cuteness, but there are several anachronistic items, like modern toothbrushes, baseballs and baseball gloves, and 20th century-style alarm clocks; Jim's barrel boat even features a steam engine. In the latter case, if steam engines are known already, why didn't anyone else - especially the pirates - install them into their own ships as well?
Animal Treasure Island (1971)
1 corrected entry
Directed by: Hiroshi Ikeda
Starring: Asao Koike, Fusako Amachi, Kosei Tomita, Minori Matsushima
Genres: Action, Adventure, Animated, Comedy, Family, Fantasy
Continuity mistake: When Gran first dangles down from the ventilation shaft, the slaver's key ring is too wide to fit through the opening. But when Jim loses his balance and Gran is jerked back into the cell, the key ring is suddenly much smaller than before.
Trivia: For those who wonder about the sign at the lake drainage mechanism: it is actually the original Japanese wording of the warning spelled in Latin alphabet.
Correction: This is a fantasy adventure. As such, historical accuracy isn't a consideration anymore than talking animals can be considered a 'mistake' here.
johnrosa