Suppressor?

I do not know what it is, it looks like a condenser as it shows 5 micro farads 360v
However, before fitting the optronic why not look in to the Fiat Uno 1.1 electronic distributor i fitted. It is great, much less expensive.

Yes it’s a radio suppressor

Yes this is a 0.5uF capacitor and it is used to suppress voltage spikes generated by the operation of the coil.
This capacitor will only reduce engine speed related noise carried over the 12volt wiring which is usually heard over the radio's speakers. It is of course connected to the +12volt supply to the coil and not to the contact breaker side.
The engine will run perfectly well without this capacitor.

The capacitor (used to be called the condenser) installed within the distributor has an entirely different function (to reduce arcing at the contact breaker points, extending the life of the points), it also "rings" with the coil and extends the spark duration and energy a bit - anyone offer a more technical explanation? They are not interchangeable.
Sorry if this is over technical!

Thank you everyone for your replies, I thought it best to be absolutely sure. That leaves me clear to install the Optronic Ignition.

Thanks again