The original distributor was well past its best. That said, the original unit did function reasonable well. The engine started and ran smoothly but after 50 years it was time for a new one.
This is a replica Lucas 25D distributor form Accuspark. The original points and condenser are replaced with an electronic ignition module. This performs the same function whilst eliminated all serviceable parts. Some may say this is a disadvantage as serviceable parts can be “serviced”. Personally speaking I have had endless trouble with Lucas points on British motorcycles in the past and am more than happy to dispense with trying to set the correct gap (with varying thickness of Rizla) at exactly the right point in the stroke (and failing, I might add) and adopt some modern technology.