Squareback vs round back alternator?

There is also no ignition ballast / IGN coil resistor installed in this car. But there should be regarding all wire drawings so far incl. the one from @Mattax which is from 1962:
Yes all points type ignitions must have the ballast resistor.
The resistor controls current through the coil keeping it from overheating. It also helps protect the points.
Only much newer systems, such HEI, have solid state control of coil current.

The resistor is bypassed during start because battery voltage is much reduced by the starter load.
During start battery voltage can drop between 9 and 11 Volts. That's why the key switch connects a second ignition terminal during start.