A rotatable display box comprising, a signage body and mount to engage this to a fixed structure in a manner to allow the signage body to be rotatable about an axis of rotation and relative to said fixed structure. The signage body includes at least two display sides. A cam and the other is a cam follower are included. The cam has a surface including a number of cam surface depressions corresponding to the number of regions at or from which signage is or can be presented, said cam surface depressions located at intervals about said axis or rotation corresponding to the number of display sides of the signage box to which said rotation is to be biased to. The biasing to such locations is encouraged by the biasing of said cam follower towards the cam surface of said cam.