To my eye Zam's first one is best so far ,
I think the extra letters and scripting only takes away from it ,
What springs to mind is form the two C's from the envelope of the tube , and just keep the cathode /heater graphic standard .
I think the extra letters and scripting only takes away from it ,
What springs to mind is form the two C's from the envelope of the tube , and just keep the cathode /heater graphic standard .