Not sure if this is the right section.. please move if not.
I'm looking for some advice, I helped a good friend get into cycling a number of years ago with the purchase a bike.
It's now been outgrown and in listing it to sell, I'm having a lot of trouble finding any information about it. Along without being able to track down a frame number... There some very slim mentions on this forum & some historical Ebay postings, but nothing that matches directly. https://www.lfgss.com/conversations/264038/
And information on these Sigma / Columbus framsets would be greatly appreciated.