Evidence to date shows that Electronic ignition became available as a replacement for points and condenser in the Post Historic era. (Around 1970).
The popular option for a replacement system was Lumenition Optronic ignition.
This comprised an amplifier, chopper blade which fitted over the distributor spindle and an “Optronic” eye assembly that was fixed to the distributor base plate.
There is definate proof of Lucas distributors being used as a replacement for less reliable makes of distributor.
Tip For Electronic ignition systems.
A good increase in ignition coil output can be obtained by using a Ballast resist coil with the full battery voltage passed through it. The main benefit of electronic ignition is that it will pass more amps through the triggering circuit, thus allowing the above mod to be carried out. However you must use a top quality coil.