Philippe (catena distrib 125)

Hello.
I hope you can understand my request.
I restore a FB Mondial 125 Lusso 1958 and have a problem to find the right primary transmission Chain for my bike.
What have this ” trasmissione primera” chain for specification or dimension?
Is this chain available over the “Mondial Club” or is there any saler in Italy ho have such a primary chain?
Thank you in advance for any help.
Best regards,
Philippe

Risposta F.B. Mondial:

Hello,
the original chain transmission is a Regina Extra you can see measurements in pictures attached.
Today it’s impossible to find.
We hope to start to rebuild a 20 pieces series of that chain to have best price (around 60 euro each).
greetings
Claudio