Hi Craig In the research I've found while researching a mystery bike<http://www.flickr.com/photos/hurricaneheino/sets/72157621878587854/>that had this rim on the front, I found out that they were essentially the least expensive Mavic tubular rim found on entry level racing bikes.
http://newsgroups.derkeiler.com/
Gotta love Google
Rodd Heino Ottawa Canada
2009/8/18 <cgallegro@charter.net>
> Hi, I need info on these rims, sewups, what was their use and pcking order
> in quality.
>
> Thanks Craig Griffith
> San Luis Obispo. Ca.
> USA