The worst 'charming flaw' I've seen on an older bike was the "cold" BB
on a '73 Guerciotti. (It was stunning stunning everywhere else
though.)
http://classicrendezvous.com/
I'm still working on a vintage De Rosa page...pour yourself some grappa
and take a look:
http://www.mookietwoh.com/
Jack Bissell Tucson, Az
Anyone have more pictures of pre-SR Ugo bikes?