Lieven has found another variant, so here is the updated Bendix 6080WB list:
1. Triangular Plates with Copper Rods.
2. Holed Plates with Copper Rods
3. Holed Plates with Steel Rods
4. Rectangular Plates with Steel Rods
5. Slotted Plates Curved Face with Copper Grid Rods
6. Slotted Plates with Curved Slot and Curved Face.