[HAM] M-100 speaker ratings

[Stainless Brown]

Does anyone know what the speakers are rated at in this model (1962). I'm missing one of the 12", and aside from knowing the remaining one is 8 ohms, I don't know what power rating I need.  Also, I'm assuming the 12's handle the bass frequencies?
   
  Thanks
  Stan
  Sacramento
   
  PS- I found a home for the H-100, they're coming to pick it up tomorrow (so I didn't rob the speaker from it)