A removable coverall display device to overlie a free standing real estate "For Sale" sign which sign consists of a rigid plate member supported from the cross arm of a ground secured post, the display device consisting of a pair of opposed sides of flexible material closed at one end and open at the top, bottom and at the other end thereof to overlie the plate member, the other end being adapted to be releasably closed and releasable hanger strips extending over the top of the rigid plate member to secure the device and the device prominently displaying the identity of the person on duty at the site of the sign.