Bill,
700x25's are getting hard to find, but the 23mm Vittoria Corsa CX clincher is available in the natural sidewall from these guys:
http://www.competitivecyclist.com/
At least it's really 23mm wide, I think they ride nicely. It's a little wider than the veloflex and some others that are also marked as a 23.
Grant McLean Toronto, Canada
CRer's, I'm just finishing up my build of a late 60's Plum Vainqueur. I need some 7 00 x 25 tan/skinwall tires for her. I just CAN'T put on the all black tires that seem to be all that is now available. Anyone have a source or stash t hat can help out? Maybe a pair of Avocet Fastgrip (previous generation)?
Also looking for some period aluminium mudguards for her.....
If interested see the pics @ http://www.wooljersey.com/
Thanks,
Bill Talbot
New Hartford, CT