Hi Tom
Thanks for the clarification and expansion on the pedal identification.
One point I'd like to add is how the issue of what parts go into what groups actually shows what a somewhat artificial construct of the 'group' really is. This extends to components made today. There is no chorus or centaur 10speed chain, there is only one chain for 10speed, so if you buy a centaur equipped bike, you get a record chain.(sorry, not a 60's record, but record 10 ;-) If you buy a chorus crank today, (not that you would) you get a record inner chainring. These are parts with only one part number. The other issue is finding what's the difference between some parts. Try to find a difference between a chorus and record 10speed front derailleur, (besides the logo) The record is about $3 more at wholesale, so how could there possibly be any major difference.
The whole 'grouppo' designation is a marketing idea, not a manufacturing one, so it's no surprise that a company like campy is more likely to have parts that are less easy to label in a tidy fashion over time. Shimano, on the other hand, has always been quick to change logos, names, packaging (and usually pricing) to make sure the loose ends are tied. I like it that campy stuff isn't always so "tidy", that's another reason why they have MOJO.
Grant McLean Toronto, yes it's too hot to ride today, Canada