This enamel pin POS display is built to show of 1-6 pins on their business sized backing card. It contains a small set of perforations on the front to allow for one display unit and has a slot for the cards with back support to reduce chances of slumping. 
The slots are designed to allow for 55mm wide cards and up to 11mm wide pins. 

The base has been hollowed out to save on material but can easily be weighted, alongside 4 feet that can have stoppers added to reduce slipping. The gap in the back supports means rear parts can easily fit without interfering with other components.

The unit is currently on shapeways, and does not come with the pins, backing or the package that has been created for the joy of these renders. 

The unit can be found at: https://www.shapeways.com/product/ESQBEDDLD/pos-enamel-pins?optionId=145844858&li=shops