I have a set of undated NR cranks with two NR-appearing and Campagnolo stamped chainrings. the chainrings do not have the number of teeth stamped on them. Was there a period of time when the chainrings did not have the number of teeth marking? My other Campagnolo chainrings all have the number on them.
Thank you.
Cheers.
Tom
Tom Hayes
18585 Munn Road
Chagrin Falls, Ohio 44023
hayesbikes@nls.net
hayes@jcu.edu