Altenburger Cinelli B

Cinelli made an unknown number of frames to be used specifically with the Altenburger derailleur system; more information here and here about it. Photos of such a bicycle, and with matching fenders (click on photos to enlarge):

Reminder: I invite you to contribute by sending in photographs of your Cinelli bike, illustrations, personal stories, and articles about Cinelli bikes and components. I can be contacted at veronaman@gmail.com