Impossible Lock (2545)

A borrowed ring is locked on a 4 digit combination brass lock, the dials are mixed by the magician and the spectator can hold on to the lock while the dials are mixed and spectator can test a few times that the lock cannot be opened. Then you ask for the birthday of any important year, when the spectator HIMSELF dials the number on the lock it seems to be the right number as the lock now suddenly opens !

Comes complete with lock & instructions.