Citroen Specials Club - the club for all lightweight cyclecars

Many thanks for your responses much appreciated.

I have a 123 Ignition system fitted to my 223. The 123 brochure is saying that if you use other than a Ducellier or Femsa coil it will probably damage the system. Can anyone tell me if this is the case and if so, where do I obtain either or from? Any advice would be appreciated as I am a new member.