Re:
Hi,
Not sure if this will help or not.
I have a couple of used, Regina 5 speed freewheels.
One a Regina Extra Oro, 18,16,15,14 and 13 tooth.
The other is a Regina Gran Sport 25,22,19,16 and 14 tooth.
Not sure how, or if they will fit your Campy hub?
Regards
Colin