They do have a network box and the black mesh. They just don't have the adjustments. I emailed you a pic. I just took another look at the original box which reads Magnum M2ic Selectable Impedance Interconnects. 1m Low. I didn't notice the bit about the selectable impedance before now. Could they possibly have been built with the wrong network box? I got them used so I'm not the original owner. Let me know what you think.
If the difference between the LOW and MEDIUM is that minimal, I'm not going to worry about it.
Thanks again! Bernie