Which coil for the Griff

[FFMan]

If I suspect the coil is faulty on my early Griff 500, which type should I replace it with. It has a blue one marked Intermotor at the moment - can I put a standard coil on or does it have to one specific to the amplified ignition ? (If so where do I get one ).

thanks

[Elwood]

Lucas DLB198, Bosch 0221122392 or Mallory 29216 if you want a chrome one.