Abstract: A display case and a merchandise display rack for supporting a plurality of such display cases around its circumference in a radial relationship. The merchandise display rack includes a plurality of relatively movable support members provided with cooperating spindles which are adapted to support the display cases and adapted to be simultaneously locked against displacement by a common locking mechanism to prevent unauthorized removal of the display cases. The display cases are trapezoidal in shape so that they can be received around the circumference of the display rack in radial relationship and each display case includes spaced aligned bores for receiving the spindles of the merchandise display rack. The display cases may be used to support a wristwatch therein and include a one piece base for supporting the wristwatch and a transparent cover including means for engaging the base.