Second Quality Uncapper:
Ex-Demo, or
Opaque coloured plastic frame
 
Occasionally we have an Ex-Demo National Uncapper from a Trade Show or BKA extraction day event. Functionally perfect but will have some propylis or wax evident. 
One batch of plastic frames had some colour opacity, with a grey look, which we do not like. A critical tolerance locating the rollers was reduced from 1.6mm to 0.8mm - tighter than the design. Still works but not as beautiful.