When Mabuse enters the counterfeiting den in the guise of a drunken sailor, he unlocks the ribbed door and pushes it open. The next shot, from inside the den, shows the henchman pull the closed door open for Mabuse.
As Mabuse's driver gasses Von Wenk in the taxi cab, there is a brief cutaway showing Mabuse himself in the back seat instead, clearly a recycled shot from the scene before.
Towards the end of Part II, one of Mabuse's henchmen is thrown into a cell and tries to climb the walls to get at the barred window. The left wall flexes several inches as he puts his foot to it.
When Mabuse abducts Dusy Told and places her in his car and departs, wires pulling the car forward can be seen.
The sign at the Excelsior about languages spoken declares "Her talces svenska" ("Her" and "talces" are pure nonsense). It should read "Här talas svenska" ("Swedish spoken here").