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@dinosaur
carbon chorus cranks introduced in 2004 and they moved to 11 speed in 2008 so presumably 2004-08.
https://bglegendarybikes.com/blogs/notizie/campagnolo-a-famous-italian-brand-history-collecting-the-rarest-italian-bike-components
I'd assume that all the compact chorus carbon cranks in that period use the same chain rings but I'm no expert.