I have learned a few things about old Campagnolo that I want to share:
Campy made a Nuovo Tipo hub that had the elongated holes (like the
Record hubs) rather that the round holes like most Nuovo Tipo hubs. See
it at http://www.velostuf.com/
I have never seen or heard of this before. It may be a production mistake... Note the lack of a grease hole in the middle, the logo, the nut on the end of the quick release lever (like Record) and the QR nut (like Nuovo Tipo). The cones have the silver finish (like Nuovo Tipo).
Also, on a very early version of the Campy hub quick release, there is
the open "C" on the lever. This open "C" can also be found on early
versions of the downtube shifters. On the QR, the open "C" also appears
on the word "Camp." on the chrome part that holds the QR lever as well
as the QR nut. Along with the open "C" is a small letter "O" above the
period after the word "Brev." I'm sure that the "O" is part of the
contraction of "Brevatato". To make things more confusing, the "O"
above the period on the chrome QR lever holder also appears on a version
that does not have the open "C". I would guess that this was a
transition period after the open "C", but before the "O" above the
period was deleted. The small detail is difficult for me to get on the
picture, but you can view the QR's at http://www.velostuf.com/
This "O" also appears on the early dropouts. See this at
http://www.velostuf.com/
So, I think it's safe to say that the open "C" as well as the "O" above the period after "Brev." on various Campagnolo parts makes them very early- perhaps mid 1950's.
Let me know if you have any questions.
John Barron
Minneapolis
http://www.velostuf.com
velostuf@qwest.net