1960s litho tinplate Peter Pan mechanical arithmetic puzzle game.
The sides each have a lever that, when pulled, activate the four dials.  Add, subtract, multiply and divide spin and the answers are revealed when the little tin flaps are lifted. One of the flaps is missing one hinge.
In good condition for its age. Some rusting to the side panel and a little bent out of shape, but the colours are still strong. Please see photos for more details.
To make the numbers land in the centre of the windows, hold the lever down until they have almost stopped spinning. Otherwise the numbers may not land centrally to the window. 
Dimensions:
Width: 170mm (6 3/4”)
Depth: 180mm (7”)
Height: 100mm (4”)
Weight: 430g