A613-67 is called a Coil Plug Assy. by Bally parts catalogues. This was used in flippers from the 70s including old style, zipper, and new style flipper assemblies for EM and early solid state games
Coil stop for electromechanical stepping units and flipper assemblies, has 9/16 inch on center mounting holes.
Plate thickness is 1/16 to 3/32 inch