Ben Butler said "...The biggest mystery to me is the combination of Nervex Pro lugs and Vitus tubing - it seems that even with the French bikes it was always Nervex/Reynolds, ..."
Nick March's Dutrion has Vitus tubing with Nervex Pro lugs
see http://vieuxvelos.canalblog.com/
Peter Brueggeman
La Jolla California USA
4peebee(at)peterbrueggeman.com