The Thirty Nine Steps

Continuity mistake: As the Prussian agents escape by carriage with Hannay after 'springing' him from police custody, you can see modern markings on the road for a car parking space.

Other mistake: This takes place in 1914. While the Prussian agents drive away with Hannay, after kidnapping him from police custody, on the road you can see a modern marker for a car parking space, near the corner. (00:25:10)

More mistakes in The Thirty Nine Steps

Trivia: When Richard Hannay is hanging on the minute hand and you get shots of the clock gears bouncing about, they appear to be car gearbox internals. There is definitely an BMC A-series differential in there.

cachalot

More trivia for The Thirty Nine Steps