The Wilkinson Zebra is their authentic-sounding take on the original Double Coil Pickup. Many people consider the Zebra to be the best!
The original spec for Humbucker bobbins was black. A shortage of these items on the production line in the 1950s resulted in bobbins being sourced in ivory coloured plastic. Hence, when guitarists started to remove their brass covers, they discovered that some guitars contained "Zebra" pickups. Some people believe these are the best sounding pickups ever. By using the same windings as the WVC pickup, they are therefore as authentic as anything else available.
The bridge pickup version of the Wilkinson Zebra can be viewed HERE.