III - Unlocking the clock
Retrieve the coin from the drawer and place it in the previously unlocked compartment. It reveals the code for the three buttons: 2, 5, 8 .
Position the buttons correctly to lift the piece underneath, then rotate the decoration. This action releases the tab on the left.
Next, use your phone's flash by inserting it into the hole above the clock, preferably in a dark environment: the time will then appear inside the window.