Tubular Dart Display Holder - Wall Mount

A tubular nine dart wall mountable display / holder.  Hidden mounts.  The mounting holes are 12mm from the top, 15mm from the side and 10mm apart between the mounting brackets.  Overall length is 204mm and overall width is 60mm.  The tubular dart holder holes have a radius of 10mm and are 45mm long and funnel down a length of 10mm to 3mm holes that are 15mm long for the dart tips.  I've included cad drawings of solid, transparent and wireframe and I've included real photos of the model.