Most adventure movie continuity mistakes of 1954

1Seven Brides for Seven Brothers pictureSeven Brides for Seven Brothers (1954)15
220,000 Leagues Under the Sea picture20,000 Leagues Under the Sea (1954)2
3Creature from the Black Lagoon pictureCreature from the Black Lagoon (1954)2
4Seven Samurai pictureSeven Samurai (1954)1
5River of No Return pictureRiver of No Return (1954)1
6The High and the Mighty pictureThe High and the Mighty (1954)1
7The Black Knight (1954)1